Are you still getting the errors as of this post?
(All times in UTC)
Yes. It was working more or less from 00:17 - 03:29 and in the last half hour. Outside of those times poclbm was switching back an forth all the time. Is there a miner who writes a log-file? I'm already using -v but that's not verbose enough.
-v is actually for vectors. I don't know of any off the top of my head that write log files. You could modify the python code though. I might look into adding some debug code to poclbm it if I get some extra time.