Crashes browser after some time?

[Neo]

I have windows 7 OS, updated chrome and firefox 7.0 version but in short time i saw several time browsers is crashes. Error msg is "check the online solution" and "close the programs"
Also below that i saw

Problem signature:
Problem Event Name:BEX
Application Name:chrome.exe
Application Version:31.0.1650.63
Application Timestamp:529e8b45
Fault Module Name:sprote~1.dll
Fault Module Version:0.0.0.0
Fault Module Timestamp:51011825
Exception Offset:000b343f
Exception Code:c0000417
Exception Data:00000000
OS Version:6.1.7600.2.0.0.256.1
Locale ID:1033
Additional Information 1:5476
Additional Information 2:5476682141d4674d2067edfcd556b168
Additional Information 3:a58f
Additional Information 4:a58f3265a75ae02f28fbc3099a8cdb4e

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I have also Quick heal antivirus..
What is the exact problem?

[armanur]

Hey guys, I'm having some really serious problems with my laptop. All of a sudden, all my browsers (IE 8, FF5, Aurora, Chrome) are lazy to do their work. Maybe a virus or something in the network? The laptop is like 3 years old, latest Win XP - genuine, Eset Smart Security 5 RC - installed after the problems started occuring, IMF - a long time ago, latest drivers on everything... I don't recall of installing or doing something "wrong" when the problems started... The problem is that everytime I turn on the laptop, everything works like a charm, I browse the internet, forums, gamesites, facebook, youtube... but suddenly I try to open a site (anything, like just google.com), or when a site is loading, browser freezes, you can't do anything just close the tabs... But the processes (iexplore, chrome.exe, firefox.exe) are still running, with constant memory sipping and increasing PF - nothing big, after 20 minutes just like 500,000 ... you cant kill the process even with pskill... firefox isn't running til a restart, chrome is running for a few minutes after opening a new instance of it... But now the problems are even worse, I had the computer turned on for some hours and when I opened chrome, there was an error like something with proxy - I don't use proxy, I'm wireless connected to a router which is working without a glitch for a LONG time... you can ping anything, play games over internet, download anything, but browsers just won't work... Tried to reinstall chrome, didn't work... completed many malware/virus scans, nothing found... What can cause the problem? Thanks in advance guys, it's crucial