Stack overflow error message

I am new to this forum and btw it looks great. Hopefully some person can help me with this one. I am running XP Pro on a P4 2.53ghz with 1gig of ram. A couple of months ago I started getting a message on some sites on IE6, the message is: stack overflow line 106.
After much messing around and no success, I decided to reformat my computer and do a fresh install of everything. Problem solved, well it was for 2 weeks and the same message is appearing again. The odd thing is that it does not appear on all sites, probably only about 10% that I open. The problem does not exist on firefox which I sometimes use..Any help much appreciated.

 

the best fix for ie6 i could find was ie7

 

I neglected to add, it does it on IE7 as well..

 

Do you install Norton AV? As Norton AV uses a lot of stack space.

 

http://support.microsoft.com/kb/315937/en-us

 

I do not have any of Norton products installed. I use Vet antivirus and firewall.

Peter