I am about to throw my laptop across the room. About 2 months ago my computer started slowing down while online, hanging up and occasionally crashing (the browser only). It felt like some kind of virus or malware so I ran every scan under the sun and found nothing. My computer isn’t slow in general, in fact it is nice and fast when I am working with offline stuff. I concluded that a virus or some kind of malware wasn’t the problem.

I am on the Internet for most of the day and evening. I use Firefox, I usually have a lot of tabs open and I have a ton of security software and add-ons so I assumed it was a problem with something I had loaded or added on. So I updated absolutely everything. I disabled all add-ons that I don’t use regularly and no improvement.

It has gotten so bad that every few pages it freezes so badly that I have to empty my cache and click on “repair” on the Windows wireless network connections thing in my Windows tool tray. Doing that helps a little, but that only gets me slow performance of my browsers for a few pages.

Concluding that it was a Firefox problem I grudgingly went back to IE, but that had the same problems. Now every page hangs. Arrgh. I don’t even know where to start. I don’t know what to focus my troubleshooting efforts on.

Where would you look? What site would you go to for help with this kind of problem?

Here is some info about my system which might help:

My computer is less than a year old:

Dell Latitude D830, Intel Core 2 Duo T9300, 2.50GHz, 800Mhz 6M L2 Cache, Dual Core, 4.0GB RAM, 256MB NVIDIA Quadro NVS 140M and I am running Windows XP.

I have a DSL connection thought CenturyLink (local phone company) which I access through my Linksys Wireless-N router (WRT300N)

I run tons of scans regularly:

CCleaner every time I shut down
AVG free version with everything enabled. Set for auto comprehensive scans daily.
Trend Micro Web Protection Add-on is resident

I run scans every day or two with several scanners:

Spybot(no TeaTimer installed — I heard there can be conflicts with AVG)
TrendMicro Housecall
SuperAntiSpyware – Free edition
Malware Bytes antiMalware
Dr.Web CureIt!

Do you see any potential conflicts of software that sticks out to you? I am on the computer and online almost all the time and I am frustrated to no end. Where should I focus my troubleshooting efforts?
No one should click the combofix link in the first answer. I just tried and WOT picked up that is was a bad link. If anyone wants to go to combofix, please just type the address into the browser.

I don’t want to report Sunshine for abuse b/c it could easily have been an inadvertent mistake, but please avoid clicking that link!

Thank you ThatsLife, I will try all that.