Crashing on Windows client on a MacBook Pro

Anyone can help me to understand this? I bought a MacBook Pro 2.33 GHz a month ago. SL runs smoothly on the Mac client, no problems from that side. However, I used BootCamp to make a Windows partition, installed Windows XP and downloaded the Windows client. To my surprise, I hardly can stay in-world on Windows for more than 30 seconds, at most 2 minutes, without crashing. As I had never used Windows in my life, I'm having a very hard time to understand the error messages that the screen display after the crash and the Windows security check on the hard disk. Sometimes it just checks it and that's all. Other times it give me messages like "the size of the file SecondLife/cache/textures is not valid"... I say "messages like" because it doesn't always give me the same message either. I uninstalled and reinstalled the Windows client, tried many times, same result. I confess I was quite excited to be able to play, at last, some more games than the ones allowed to Mac users. Now I doubt I'll ever get there. My only other try was with Neverwinter Nights online... I crashed after 45 m, which is an improvement, but I still dont know if the crash was due to a problem in my Windows partition or just the kind of thing that happens to everyone now and then... it shut the system down completely. I know many of you have got a Windows partition and use it, even for sl, so I would be very grateful for any comments. Thank you so much in advance

Hmmm...
Its hard to tell what's going on..but repeated crashes and that message about corrupted file sizes is troubling.
Try starting up from your System CD and run DISK UTILITY...or better yet, get a copy of "AppleJack". Its free, and does a 5-star job of fixing disk drives.

I have that type of crashing but on the Mac side not the PC side of the software. Running the current and last SL version causes my mac book pro to do a full lockup.

Thank you both so much for the comments... Sterling, I did the disk utility checks on both partitions, Mac and Windows, and it didn't found any problems... Ninja, I'm sorry to hear that, I've had no problems on the Mac client so far... I recommend you to create a new account on your Mac and download there the sl client and nothing else, it might help... *cross fingers*
If anyone else can come up with any other idea, I'm still here

thats odd, its most likely a driver issue. The bootcamp video drivers are a bit older than the top of the line drivers. You might try disabling most of the video features in the Windows client in SL, unmark like everything and turn things way down.... see if it works, can slowly add things over time as it stays stable... it can be a long process.

Thank you, Missy, sorry for the late reply. Strangely enough, after downloading the last "optional" viewer, 1.15.1 (3) I was able to run the Windows client for more than 2 hours before crashing (complete shut down of the system) started... At that point I even wondered if it was a consequence of overheating, since the fans were going crazy... I'll try what you suggest, but mostly I think I'll stick to the Mac client and hope that it continues running as relatively problem free as it has for me up to now...