Oddly enough, mine seems to be fine now. I can't say anything I did changed it, maybe it was something on zap2it's end. Wolfeh and CaptVideo, can you check yours?
PC: Intel E2180, 2048MB RAM, IP35-E
Capture: Silicondust HDHomerun
Disk: 120GB Boot, 5x500GB media on netcell RAID3
VGA: ATi Radeon X800 GTO PCI-E
Front Ends: PCH A-110
GB-PVR v1.2.13 on XPSP3