Are you running NWN in windowed or full-screen mode? I run NWN in windowed mode and I find it solves a LOT of crashing issues (for example, the alt-tab crash in workshop).
Running NWN in a window actually causes my system to randomly lockup completely, beyond rescueing with CTRL ALT DEL. I gave it the benefit of the doubt the first time (while crafting in the Alchemist's) but when it crashed me during a Cania run I decided that I didn't want to keep disappearing from hell runs for a minute while i reboot my whole system, possibly miss tags and cause damage to my computer by turning it off via the power button while everything's still running (but non responsive). A few DMs on the run said that they run windowed all the time and have no problems, but I guess that's one of the wonders of a laptop integrated graphics card.
Thanks for posting anyway Acaos, it was the first time someone's posted instructions for getting it to work in windowed mode that i've managed to get it to work... sorta.