i am somehow getting unusually alot number of illegal operations everytime i play in the undermountain?? I got 2 illegal in a span of 5mins

specs:
Running on Winxp service pack 2. got over 1gig memory and a decent enough video card so the requirements isnt the problem here. Any chance you guys can give me a suggestion?

Well I doubt it's a hardware issue since it sounds more like it can't find the files it needs. Best option would be to try a fresh install of NWN and all the hak packs.