Hello All, I've recently got back from vacation and decided to play my Favorite First Person Shooter "CrossFire". So every thing loads up all good and i go in game, so im playing just fine with around 60-70 fps the all of a sudden BOOM 15 fps for about a minute or so then the screen pauses for 15-30 seconds then its back to 60-70 fps again, I have never had this problem. If you could please give me any suggestions? Thanks alot 
Windows Vista Home Basic
AMD Athlon(tm) Processor LE-1600
1 GB of RAM
NVIDIA GeForce 6150SE nForce 430
Windows Vista Home Basic
AMD Athlon(tm) Processor LE-1600
1 GB of RAM
NVIDIA GeForce 6150SE nForce 430