FF freezes up after 2-3 hours of browsing???

Hey Guys!!! :)

Here's some information:
FF v 3.5.11
Add-Ons/Extensions:
Download Statusbar 0.9.7.2, Flagfox 4.0.12, Free Download Manager Plugin 1.4.2, MS.Net Framework Assistant 1.2.1, PC Sync 2 Synchronisation Extension 1.0.0.733 (for my Nokia handset), RealPlayer Browser Record Plugin 14.0.1 (all enabled)
NEW Glasser by SzymekPL 2.2.0.3.7, Stylish 1.0.11 (both disabled)

Issue/Problem:

FF freezes up after every 2-3 hours of continuous browsing. I can't close or minimize the only way to close it is thorugh Task Manager & to minimize i have to click "show desktop" but if minimize then it won't come-up on the screen even though its open & running. So, have to close the current session & start a new session & FF doesn't recover my opened websites all the time, some time it does & while other time it choose not to.
Even there are no dialog box with an error saying that FF has crashed & have to send the report to FF support team. Also tried running with minimum Add-ons/extensions still same issue. If using FF for 10 hours in day it crashes/freezes up atleast 4-5 times.
So, need some help on this. Attaching a screenshot of this problem:

I would recommend using CCleaner.

p5bdkw said:

I would recommend using CCleaner.

Sorry but i lost you there mate, CCleaner for what??? As i keep the option ON to delete Cookies & Caches when i close FF & also "Accept Cookies" option is Turned-off.

But i do use CCleaner at the end of every session. But that no way resolve this issue. ...

I fought with mozilla FF for a while with V3.5. I had no end of trouble with it, and when I upgraded to 3.6, all of the problems went away.

I started having a similar problem since the last upgrade to FF 3.6.13

I'm usually able to run FF for a few hours before it gets noticeably sluggish.

I've resorted to simply re-starting the App.

I don't have a solution, but just so you know you're not alone...

rap33042 said:

I started having a similar problem since the last upgrade to FF 3.6.13

I'm usually able to run FF for a few hours before it gets noticeably sluggish.

I've resorted to simply re-starting the App.

I don't have a solution, but just so you know you're not alone...

Yeah i know Richard... But can any1 confirm as upgrading resolve "this" issue as i had this issue with 3.6.13, 4.0 Beta 2...

So, it seems to be a Bug causing the issue but i couldn't find it...so can't be 100% sure about it.