About half the time, DMM times out on the Verify Files step, never seeming to locate the file. The other half of the time, it locates it (sometimes after minutes of pondering), then things work fine. I've tried restarting DMM, Async Services, etc., but no pattern emerges. I don't believe it to be a permissions problem because I have had success with this configuration.
Any ideas about what DMM is doing before it finds a file in this migration step?