Have any of you got this problem? I programmed a working particle system on a friend's computer running a GeForce FX 5900 lite (i think) and it worked smootely. I'm running an ATI RADEON 9200 and when I tryed my program I got a quite ugly bug. The particles start allright but after a few seconds they scale infinitely on the Y-axis and it makes all the program lag to death. Here are links to the pics : BEFORE THE BUG: http://img402.imageshack.us/my.php?image=itbeginsallright5tx.jpg DURING THE BUG: http://img402.imageshack.us/my.php?image=butthenhum3oo.jpg Have any of you guys got this problem?

And i'll add that these are POINT SPRITES with a circular image so if they are streched, it really is a bug.
A D3DPT_POINTLIST.