I'm sorry to hear about you guys having problems with the drivers. I'm not sure why it happened for you guys but I haven't had any problems with them.
jrenna, it's a well known fact that the later Ethernet drivers are no good, I still use the ones from the 2.45 UDP. As for the UDMA issue, I think that must be an ATI issue. My Leadtek TV card has no problem with the SW-IDE drivers though nowhere I've looked shows the DMA mode of my system's drives...
Texun, I'm not sure what to say about the IDE driver crashing your system. I've had previous versions of the SW-IDE driver cause my drives' heads to slam rather than gently park but that was the SW-IDE driver that came with the 2.45 UDP. The SW-IDE driver in the 3.13 UDP and the new 4.12 works very well for me, but I only use WinXP Pro so that might be the difference.
Hopefully the new UDP will have these issues fixed for you guys, I'm eagerly anticipating them myself.
