Hi…im noticing a strange thing here…when i run my app, using VStudio 6 , debug mode but without debugging, the total time consumed by pbuffers enabling/disabling is about 28 mseconds (there is 2 pbuffers, so 2 enables, 2 disables), but when i run it with debug (F5), the time drops to 2-3 mseconds…did anybody face something like that? im using an ATI 9600 board…