So spurious 8259a inerupt IRQ7 is not really bad? Sounds like something bad, like hardware failing or something.
Anyway here's the log:
Linux version 2.4.27-2-386 (horms@charles.lab.ultramonkey.org) (gcc version 3.3.5 (Debian 1:3.3.5-6)) #1 Thu Jan 20 10:55:08 JST 2005
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000001fffc000 (usable)
BIOS-e820: 000000001fffc000 - 000000001ffff000 (ACPI data)
BIOS-e820: 000000001ffff000 - 0000000020000000 (ACPI NVS)
BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved)
BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved)
511MB LOWMEM available.
On node 0 totalpages: 131068
zone(0): 4096 pages.
zone(1): 126972 pages.
zone(2): 0 pages.
ACPI: RSDP (v000 ASUS ) @ 0x000f5e60
ACPI: RSDT (v001 ASUS A7V333 0x42302e31 MSFT 0x31313031) @ 0x1fffc000
ACPI: FADT (v001 ASUS A7V333 0x42302e31 MSFT 0x31313031) @ 0x1fffc0b2
ACPI: BOOT (v001 ASUS A7V333 0x42302e31 MSFT 0x31313031) @ 0x1fffc030
ACPI: MADT (v001 ASUS A7V333 0x42302e31 MSFT 0x31313031) @ 0x1fffc058
ACPI: DSDT (v001 ASUS A7V333 0x00001000 MSFT 0x0100000b) @ 0x00000000
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
Processor #0 Pentium(tm) Pro APIC version 16
ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
Kernel command line: root=/dev/hda1 ro
Found and enabled local APIC!
Initializing CPU#0
Detected 1261.272 MHz processor.
Console: colour VGA+ 80x25
Calibrating delay loop... 2516.58 BogoMIPS
Memory: 512524k/524272k available (1069k kernel code, 11360k reserved, 459k data, 96k init, 0k highmem)
Dentry cache hash table entries: 65536 (order: 7, 524288 bytes)
Inode cache hash table entries: 32768 (order: 6, 262144 bytes)
Mount cache hash table entries: 512 (order: 0, 4096 bytes)
Buffer cache hash table entries: 32768 (order: 5, 131072 bytes)
Page-cache hash table entries: 131072 (order: 7, 524288 bytes)
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 256K (64 bytes/line)
CPU: After generic, caps: 0383fbff c1c3fbff 00000000 00000000
CPU: Common caps: 0383fbff c1c3fbff 00000000 00000000
CPU: AMD Athlon(TM) XP 2000+ stepping 02
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
Checking for popad bug... OK.
POSIX conformance testing by UNIFIX
enabled ExtINT on CPU#0
ESR value before enabling vector: 00000000
ESR value after enabling vector: 00000000
Using local APIC timer interrupts.
calibrating APIC timer ...
..... CPU clock speed is 1261.2240 MHz.
..... host bus clock speed is 201.7958 MHz.
cpu: 0, clocks: 2017958, slice: 1008979
CPU0<T0:2017952,T1:1008960,D:13,S:1008979,C:2017958>
ACPI: Subsystem revision 20040326
ACPI: Interpreter disabled.
PCI: PCI BIOS revision 2.10 entry at 0xf1aa0, last bus=1
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: ACPI tables contain no PCI IRQ routing entries
PCI: Probing PCI hardware (bus 00)
PCI: Using IRQ router VIA [1106/3147] at 00:11.0
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
Starting kswapd
VFS: Disk quotas vdquot_6.5.1
devfs: v1.12c (20020818) Richard Gooch (rgooch@atnf.csiro.au)
devfs: boot_options: 0x0
pty: 256 Unix98 ptys configured
Serial driver version 5.05c (2001-07-08) with HUB-6 MANY_PORTS MULTIPORT SHARE_IRQ SERIAL_PCI enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
COMX: driver version 0.85 (C) 1995-1999 ITConsult-Pro Co. <info@itc.hu>
RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize
Initializing Cryptographic API
NET4: Linux TCP/IP 1.0 for NET4.0
IP: routing cache hash table of 4096 buckets, 32Kbytes
TCP: Hash tables configured (established 32768 bind 65536)
Linux IP multicast router 0.06 plus PIM-SM
RAMDISK: cramfs filesystem found at block 0
RAMDISK: Loading 3788 blocks [1 disk] into ram disk... |/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|done.
Freeing initrd memory: 3788k freed
VFS: Mounted root (cramfs filesystem).
Freeing unused kernel memory: 96k freed
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
Uniform Multi-Platform E-IDE driver Revision: 7.00beta4-2.4
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
ide: late registration of driver.
VP_IDE: IDE controller at PCI slot 00:11.1
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: VIA vt8233a (rev 00) IDE UDMA133 controller on pci00:11.1
ide0: BM-DMA at 0xb000-0xb007, BIOS settings: hda

MA, hdb

MA
ide1: BM-DMA at 0xb008-0xb00f, BIOS settings: hdc

MA, hdd

io
hda: Maxtor 6Y120P0, ATA DISK drive
hdb: HL-DT-ST CD-ROM GCR-8520B, ATAPI CD/DVD-ROM drive
blk: queue e0825b60, I/O limit 4095Mb (mask 0xffffffff)
hdc: ST3200822A, ATA DISK drive
blk: queue e0825fb4, I/O limit 4095Mb (mask 0xffffffff)
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: attached ide-disk driver.
hda: 240121728 sectors (122942 MB) w/7936KiB Cache, CHS=238216/16/63, UDMA(133)
hdc: attached ide-disk driver.
hdc: 390721968 sectors (200050 MB) w/8192KiB Cache, CHS=24321/255/63, UDMA(100)
Partition check:
/dev/ide/host0/bus0/target0/lun0: [PTBL] [14946/255/63] p1 p2 p3
/dev/ide/host0/bus1/target0/lun0: p1
Journalled Block Device driver loaded
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
Adding Swap: 1052248k swap-space (priority -1)
EXT3 FS 2.4-0.9.19, 19 August 2002 on ide0(3,1), internal journal
Real Time Clock Driver v1.10f
hdb: attached ide-cdrom driver.
hdb: ATAPI 52X CD-ROM drive, 128kB Cache, DMA
Uniform CD-ROM driver Revision: 3.12
SCSI subsystem driver Revision: 1.00
sbp2: $Rev: 1074 $ Ben Collins <bcollins@debian.org>
ieee1394: sbp2: Driver forced to serialize I/O (serialize_io = 1)
spurious 8259A interrupt: IRQ7.
kjournald starting. Commit interval 5 seconds
EXT3 FS 2.4-0.9.19, 19 August 2002 on ide0(3,2), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting. Commit interval 5 seconds
EXT3 FS 2.4-0.9.19, 19 August 2002 on ide1(22,1), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
ohci1394: $Rev: 1045 $ Ben Collins <bcollins@debian.org>
PCI: Found IRQ 10 for device 00:07.0
PCI: Sharing IRQ 10 with 00:05.0
PCI: Sharing IRQ 10 with 00:09.2
ohci1394_0: OHCI-1394 1.1 (PCI): IRQ=[10] MMIO=[d7000000-d70007ff] Max Packet=[2048]
irda_init()
via-rhine.c:v1.10-LK1.1.19 July-12-2003 Written by Donald Becker
http://www.scyld.com/network/via-rhine.html
PCI: Found IRQ 5 for device 00:10.0
PCI: Sharing IRQ 5 with 00:09.0
ieee1394: Host added: ID:BUS[0-00:1023] GUID[00e018000005382f]
eth0: VIA VT6102 Rhine-II at 0xb400, 00:05:5d

f:84:69, IRQ 5.
eth0: MII PHY found at address 8, status 0x782d advertising 01e1 Link 45e1.
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
cmpci: version $Revision: 6.16 $ time 11:00:00 Jan 20 2005
PCI: Found IRQ 10 for device 00:05.0
PCI: Sharing IRQ 10 with 00:07.0
PCI: Sharing IRQ 10 with 00:09.2
cmpci: found CM8738 adapter at io 0xd800 irq 10
cmpci: chip version = 055
usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
usb-uhci.c: $Revision: 1.275 $ time 11:00:40 Jan 20 2005
usb-uhci.c: High bandwidth mode enabled
PCI: Found IRQ 5 for device 00:09.0
PCI: Sharing IRQ 5 with 00:10.0
usb-uhci.c: USB UHCI at I/O 0xd400, IRQ 5
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 1
hub.c: USB hub found
hub.c: 2 ports detected
PCI: Found IRQ 11 for device 00:09.1
PCI: Sharing IRQ 11 with 00:0d.0
usb-uhci.c: USB UHCI at I/O 0xd000, IRQ 11
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 2
hub.c: USB hub found
hub.c: 2 ports detected
PCI: Found IRQ 3 for device 00:11.2
IRQ routing conflict for 00:11.2, have irq 9, want irq 3
IRQ routing conflict for 00:11.3, have irq 9, want irq 3
usb-uhci.c: USB UHCI at I/O 0xa800, IRQ 9
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 3
hub.c: USB hub found
hub.c: 2 ports detected
PCI: Found IRQ 3 for device 00:11.3
IRQ routing conflict for 00:11.2, have irq 9, want irq 3
IRQ routing conflict for 00:11.3, have irq 9, want irq 3
usb-uhci.c: USB UHCI at I/O 0xa400, IRQ 9
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 4
hub.c: USB hub found
hub.c: 2 ports detected
usb-uhci.c: v1.275:USB Universal Host Controller Interface driver
PCI: Found IRQ 10 for device 00:09.2
PCI: Sharing IRQ 10 with 00:05.0
PCI: Sharing IRQ 10 with 00:07.0
ehci_hcd 00:09.2: VIA Technologies, Inc. USB 2.0
ehci_hcd 00:09.2: irq 10, pci mem e0972000
usb.c: new USB bus registered, assigned bus number 5
ehci_hcd 00:09.2: USB 2.0 enabled, EHCI 0.95, driver 2003-Dec-29/2.4
hub.c: USB hub found
hub.c: 4 ports detected
irda_init()
uhci.c: USB Universal Host Controller Interface driver v1.1
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: acpi_shpchprm:get_device PCI ROOT HID fail=0x1001
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: acpi_pciehprm:get_device PCI ROOT HID fail=0x1001
eth0: Setting full-duplex based on MII #8 link partner capability of 45e1.
apm: BIOS version 1.2 Flags 0x0b (Driver version 1.16)
Hmm looking through that it does not seem to show everything, I think that's a lower level or something. But from that alone the main thing I notice is lot of irq conflicts... and those are a PIA to deal with.