download manager freezes up system when downloading utorrent




8 years ago
7 years ago


(Reporter: James Woodfin, Unassigned)


3.6 Branch
Windows 7

Firefox Tracking Flags

(Not tracked)





8 years ago
User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv: Gecko/20100722 Firefox/3.6.8
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv: Gecko/20100722 Firefox/3.6.8

I tried to download utorrent from and in the final seconds of completion my download froze and firefox froze as well. This resulted in a system lockup. I finally was able to close firefox 3.6.8. Upon reopening firefox, same thing occurred. Clearing all internet related files did not work. Ultimately, I had to uninstall firefox and reinstall.

Reproducible: Sometimes

Steps to Reproduce:
1.Open,, and in firefox 3.6.8 on Acer aspire D250
2.attempt to download utorrent
3. Freeze up may or may not occur
Actual Results:  
Freeze up of system occurred and overwriting of some files

Expected Results:  
Should have downloaded software.

GMA 950 Graphics
Windows 7 Starter
Atom N270 processor
Firefox calls the OS to scan the file after the download finished with the AV software that registered itself as AV software.
I think this is a problem with your registered AV scanner that you didn't specify

Comment 2

8 years ago
No the download never completes for Firefox to call on the av program. I have worked extensively with Microsoft to identify any problems in Microsoft Security essentials. Not a problem on their end.


8 years ago
Priority: -- → P5
Do you have Firebug installed ?
There is a known issue with some versions.

>Ultimately, I had to uninstall firefox and reinstall.
That will never correct any issues unless you select to clear the private data.
You can do the same with a new profile but in most cases should be enough.
I'm seeing things like this when Microsoft Security Essentials starts scanning downloads.

The entire Firefox UI locks up until the scan is complete.

Maybe it's because MSE is set to scan active file changes on the hard drive already, so it's scanning the downloaded file twice (multiple times?) when Firefox passes it off to MSE? I'll try excluding the downloads directory and downloading some files later tonight to see if that changes anything.


7 years ago
Version: unspecified → 3.6 Branch
Do you still see this With Firefox 4?
Severity: critical → major
Priority: P5 → --
(In reply to comment #5)
> Do you still see this With Firefox 4?

I still see what I described in comment 4 in recent Firefox 6 builds.
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