ADS Pyro A/V link problems

PC: Athlon XP 2000 with 512M ram, 2 7200rpm ATA133 drives, ECS motherboard
(KV7MM2+), ADS 1394 board

OS: tried both 98SE and XP

Problem: Vdeo captured from analog camcorder (don't have a digital one to
try) results in capture times that last from 3 minutes to 2 hours which
suddenly stop. The OS (XP) complains that the software (ULEAD) can't
communicate with the camera (the ADS box I presume). Cycling powering the
ADS Pyro box solves the problem, but this is really annoying. Didn't see
this many issues with 98SE (did see it once), but that could be becuase of
the FAT32 file size limitation didn't allow me to capture a file larger than
4G.

Things I've tried: DMA is on for both drives. Both drives have their own
IDE channel (set up as master) with no slaves. Turned write ahead caching
on and off and made no difference. S-Video or RCA source inputs to the ADS
box made no difference. Video is set for 32M RAM (using the Savage Pro DDR
controller that is part of the via chipset on the motherboard) and is set
for 32M colors and 1024x768 resolution {I've tried different setting at all
made no difference} Initially tried a VIA based 1394 card with similar
results as the ADS 1394 card so I don't think it's a 1394 issue. It looks
like the Pyro box gets in a "i'm not listening state".

ADS have been helpful with communication on this issue, but if anyone has
ideas on how to solve this issue I'd surely appreciate it.

SA