One of my projects does exactly this since I migrated from D2007 to D2010 2 weeks ago:

One of my projects does exactly this since I migrated from D2007 to D2010 2 weeks ago:

http://qc.embarcadero.com/wc/qcmain.aspx?d=71562

The interwebz won't have any other hints for me, but maybe here is a living soul who can explain the mystery to me?
http://qc.embarcadero.com/wc/qcmain.aspx?d=71562