Computers, bloody computers: Firefox and js3250.dll

Next to "Cathy Baker", the search term mentioned in the previous post, the biggest source of Google search hits for my site has been "js3250.dll". This little file has been the source of many Firefox problems for me in the past. Whenever Firefox refuses to open, js3250.dll is indicated as the responsible party. (I don't know if this is related to my current Firefox problems in which Firefox simply freezes up in the middle of a session. I'm now using Firefox only to check the RSS feeds coming from my friends' sites for new posts - which I will then open in Internet Explorer.)

Unfortunately I don't have much to offer on this, except a series of posts complaining about the lack of official Firefox information on this problem, and metaposts like this one. This problem is nebulous enough that it doesn't warrant its own label, and is just lumped under the "Computers bloody computers" label.

You would think with this many people being affected by a single problem, someone at Mozilla would look up and say "Hey, we should do something about this." But I guess they're just waiting for the open-source community to figure out a solution on their own.

If anyone does have anything more solid to offer than what I have posted on this blog, please leave a comment a fill the rest of us in. Thanks!

UPDATE, 1/5/2007: POSSIBLE ANSWER FOUND:
From the Mozillazine forums:

Kabli Posted: Dec Sat 9th 2006 5:19pm
This is usually is a malware that is deleting the js3250 file.
"Go to C:\Windows\System32\ipv6monl.dll and delete it. Reinstall Firefox and it will work fine."

If it was there you should do a full scan to see if there is other remaining malware. I use ewido (now by avg) http://www.ewido.net/


timothylee Posted: Dec Sat 9th 2006 9:35pm
dickvl: yes, the actualy file is deleted

Kabli- THANKS! it works fine now!


khanjrx Posted: Jan Wed 3rd 2007 8:37pm
Kabli wrote:
This is usually is a malware that is deleting the js3250 file.
"Go to C:\Windows\System32\ipv6monl.dll and delete it. Reinstall Firefox and it will work fine."

If it was there you should do a full scan to see if there is other remaining malware. I use ewido (now by avg) http://www.ewido.net/
Hi. I'm new here and I just have a question.

In relation to the malware file mentioned above, I found one on my computer that has a similar file name: "ipv6mon.dll". Although mine's missing that extra "l", is it considered to be malware also? Because I know it's possible that it might be different for everyone.


Guest Posted: Jan Wed 3rd 2007 8:53pm
There is a legit file that is ipv6mon.dll . Malware often does this, that is, using a name that is similar to a real one.

So. Maybe this is the answer to the js3250.dll problem that is frustrating Firefox users everywhere? Let's hope so!


UPDATE, 7/2/2008: Judging by my recent traffic, it looks like the recent release of Firefox 3 has not corrected this problem. Mozilla, what are you waiting for? Some user to solve this problem for you? Oh, wait, that's right...


UPDATE, 8/2/2008: Check out this (unfortunately anonymous) comment from this post:

Hi... I starting having Firefox 2.0.0.16 constantly saying it had to close - the culprit being js3250.dll. After trying the different methods here and quite a few other sites too and being unsuccessful fixing the crashes, I figured it was Javascript related - so I uninstalled all 4(!) versions of Java(TM) 6 Update 4,5,6, and 7... then reinstalled just Java(TM) 6 Update 7... and voila!... Firefox now working like a dream!... cheers :)

...and this follow-up:

Hi again... Oops, forgot to mention I then uninstalled Firefox via Ad and Remove programs, then reinstalled same Ffox version... and I didn't even have to reload all my addons, bookmarks, etc, etc with Feebe, as I thought I would have to... phew :)