transport/counter/clock behaving strangely

[hydrophilos]

The counter windows are not counting consistently. It appears as though the seconds are normal but the frames/tics have a jerking rhythm approximating 29-30 frames, then pausing for several frames and repeating this. A track/ sound playing is fine but the insertion line's movement seems to follow the frame/tic movement. Also, it behaves the same whether there is audio or not. Even if there are no tracks, the same too.

TIA
hydrophilos

I just upgraded to 8.0 (8.cs3)

2 x 2.66 Ghz Dual-Core Intel Xeon osx: 10.5.7
8 gb 667 MHz DDR@ FB-DIMM
SYNC I/O

[hydrophilos]

Just noticed that when I drag a slider or enlarge a window it behaves similarly--its smooth; then pauses or cogs; then smooth again...seems to have to do with the refresh rate or updating of the screen/graphics card?

Anybody have any suggestions?

Thanks..