Multiple profiles, automated browsing results in crash

Question

I use 5 different profiles of Firefox at the same time. They all are browsing sites at a regular rate.
A program Autoit uses handle ID's to navigate between them.
Firefox uses 25% of my RAM at that rate what i think isnt bad.
After an hour maximum on of the profiles hangs, RAM getting higher and crashes. (see reports).
I tried running in safe mode, same result.
Its not site specific or profile specific.
I tried version 16.01 and the beta version 17 with also the same result.
Before 16.01 i had no problem at all with this setup.
Can someone help me with this problem?
Thanks in advance!

Answer 1

Try to disable hardware acceleration in Firefox.
*Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
*https://hacks.mozilla.org/2010/09/hardware-acceleration/
Try to boot the computer in Windows Safe mode with network support (press F8 on the boot screen) as a test to see if that helps.
Do a malware check with some malware scanning programs on the Windows computer.<br />
You need to scan with all programs because each program detects different malware.<br />
Make sure that you update each program to get the latest version of their databases before doing a scan.
*http://www.malwarebytes.org/mbam.php - Malwarebytes' Anti-Malware
*http://www.superantispyware.com/ - SuperAntispyware
*http://www.microsoft.com/security/scanner/en-us/default.aspx - Microsoft Safety Scanner
*http://www.microsoft.com/windows/products/winfamily/defender/default.mspx - Windows Defender: Home Page
*http://www.safer-networking.org/en/index.html - Spybot Search & Destroy
You can also do a check for a rootkit infection with TDSSKiller.
*http://support.kaspersky.com/viruses/solutions?qid=208280684
See also:
*"Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked