I just posted about this issue in a new thread.

Can anyone confirm if is now totally fixed in a later full realease, and if so, which release was the fix. I've checked release history at dvdfab.com but no info there. my problem is with 4.0.5.0 & I'm in the porcess of running versiou tests to try to define exactly when/how it occurs

(MODS - please feel free to merge the threads if thast is appropriate - thanks)