This is why I’ve been saying that WordPress should have a Known Issues part in the official announcement and/or release notes.

Most issues people are encountering were known:

1. HeadSpace2 JS conflicts: Known beforehand. (Experienced it myself, and also reported it at the HeadSpace2 bugtracker.)

2. Insufficient memory for upgrading: Known beforehand very well.

3. Stuck in maintenance mode. Known beforehand. (Experienced it myself some time ago.)

4. DB drop-ins incompatibility. Expected and known since the beginning of the MU merge.

Cheers!

Demetris
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