whitenight - 9:02 pm on Apr 29, 2008 (gmt 0)

Unless your website falls under the "very trusted" rule ie. 6+ years old with authority links, then lately Goog has been very cranky with Title changes/tweaks.

As said above, only thing you can do now is give it 2-3 weeks to settle down and see if the changes ultimately help or continue to suppress your rankings.