what a pain. my win7 was stable until IE9 was installed. In the end I disabled the graphics acceleraton and that cured it.

I've had another BSOD this afternoon and WhoCrashed said it was in the rt64win7.sys driver file - Realtek 8136/8168/8169 NDIS 6.20 64-bit Driver - so I had a look on the Realtek site and found a later driver which is now installed.

I must admit I'd thought I'd checked all drivers to ensure I was up to date. Clearly that one got missed. Is there any Freeware around that will check all drivers on a system and report on their uptodateness?

Anyway, we'll see.

Pcpitstop.com driver alert is what I use.