Hey, I have a problem in which my computer will just hard lock.... i will be browsing the web, playing a cd, just doing whatever, and all of the sudden it will just STOP working. i get no response from the mouse, keyboard........ nothing. my cd will keep playing in KsCD, but that's it. I have this problem even without playing a cd. i can just turn on my computer, startx, then wait.... and it will happen. it is completely random, and its starting to get annoying. i was trying to post a couple of mins ago on here, and it did it. i dont know if this is a memory leak, or what....... i doubt a memory leak cause its linux

and i did a memtest with no errors , but i want to get to the bottom of this. i'm afraid to start programming in php and forget to save my script every 5 mins and have it lock. i left my computer up as a web server today when i went to work, and it worked fine. i log out to stop x, then i log in, and just let it sit at a prompt, turn my monitor off, and go to work.... i can access my webserver at work just fine. when i came home today, i started x, then went about my business thinking it maybe fixed itself? nope. did it thrice since i got home at 7. maybe someone else had this problem and found out what it was? help!