I'm crashing a lot too and was before the last patch

And it's not just crashing the game, but most often it locks up the whole computer and I have to do a hard reset.
I'm on a Dell XPS M170 laptop, 256MB NVIDIA GEForce 7800GTX PXI Express, Mobile Intel Pentium M Processor 780 (2.26GHz, 2MB Cache, 533MHz FSB), Windows XP, 2GB DDR2 dual channel SDRAM at 533MHz.
Connection is DSL 768 kbps.
Instances when I crash:
--in a high traffic area in open chat
--when building
--zooming way in on something with the camera
--when Yahoo messenger is on at the same time as SL
--when my fps shoots above 45+ (there are times I can see the fps going above 60)
However, crashing does not always happen when I'm doing these things or a combination of these things. I also notice the laptop is overheating only when I'm on SL and usually when my fps is very high, not in any other application or game.
In Preferences I have my draw distance set at 96. Shiny and ripple water are on, but nothing else. AGP is checkmarked. Cache is set at 1000. I have streaming audio and video on.
Are there other stats I should be listing? I send a crash report every time, but I have no idea what to say in a bug report, if this is even a bug???
Any advice would be appreciated.