IRQL Less or Equal

I have been having this error on and off the past few months.

I must stress that it only EVER happens while browsing in internet explorer, the problem has never happened in firefox or in ram intensive games.

I play games all day long sometimes, including oblivion which is very hardware intensive and am yet to have a BSOD when doing any of this; only when browsing IE.

Please find attached 6 minidumps.

Just wish to bump as yesterday there was an attachment problem and seems to be ok now.

Doing so as you may dismiss this thread as one which hasn't got minidump attachments.