I thought I saw this same message before, with a different reply!

Anyway, did you restore a backup after reflashing? I would think that could cause this problem if something causing a problem was restored.

It looks to me like you DID post this message elsewhere. That's very confusing. My first suggestion is that you try the stuff posted on the other threads.

It is very unlikely that changing to boot from an add-on card will solve this problem. It will just duplicate it, won't it?