Wow, Firefox 4.0 has a serious bug with downloading

VirtualLarry

No Lifer
Aug 25, 2001
56,570
10,202
126
Downloading some files from my internet-connected NAS, when I click on the link, the download window pops up, and it says "unknown time remaining", which causes a little green bar to slide across the progress bar repeatedly.

Only, it only updates that window, if I move the mouse or type within a window of Firefox. It doesn't update on it's own. And judging by the count of MB updated, it looks like it actually stops downloading as well, if I don't move my mouse.

I tried downloading these files before, to my C: drive (which has 42 reallocated sectors), and it timed out. I thought perhaps it had hit a bad spot on the HD or something, but now I think that I simply didn't move my mouse enough, and it timed out on downloading the file. (I tried downloading it again to my D: drive, which is brand new and has no reallocated sectors.)

This is a MAJOR FLAW in FF4.0, having to constantly move your mouse around in the window, if you want to download a large file.

Edit: I dunno what's going on, even page loading now pauses unless I continue to move my mouse. Something strange is afoot.

Edit: I restarted Firefox after the DLs completed, and now I cannot get this issue to reproduce. The download window is auto-updating just fine now.

Edit: Now I'm thinking that this is a windows scheduler bug, as the process only gets CPU time, when there's input waiting in the queue. Or possibly an error with a windows timer object.
 
Last edited:

dpodblood

Diamond Member
May 20, 2010
4,020
1
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Did you try turning it off and back on again? I've been using FF4 since release, and never experienced that issue.
 

Crusty

Lifer
Sep 30, 2001
12,684
2
81
Your NAS is running a crappy web server. It's not sending the Content-Length header so the web browser has no idea how much data is actually there. Sure the behavior in FF is undesirable, but the root problem lies in your NAS.
 

VirtualLarry

No Lifer
Aug 25, 2001
56,570
10,202
126
Your NAS is running a crappy web server. It's not sending the Content-Length header so the web browser has no idea how much data is actually there. Sure the behavior in FF is undesirable, but the root problem lies in your NAS.

Well, it started to do the same thing, stall out, when web browsing after I finished my downloads.

So I don't think it has much to do with the "content-length" header, unless that triggers the bug internally in Firefox, and causes it to start stalling.

But restarting Firefox, and it was then downloading normally from the NAS.