Hi,
I was seeing exactly the same error, on Adobe Pro 1.5, capturing from a Panasonic over firewire. There were even errors using Windows Movie Maker!
Eventually, I realised that my overclocking of the Front Side Bus was to blame. When I returned it to 200 MHz all was fine.
Interestingly, I managed to avoid the error AND overclock the Front Side Bus by overclocking the PCI express bus at half the FSB rate, rather than leaving it untouched at 100 MHz. It appears that this action is not advised, but torture tests of the system do not reveal instability.
Hope this can help,
Simon Waddington