as a side note, when ever PS starts to act a bit wonkey, toss out your PS Pref file (preference file) and let PS rebuild a fresh one.

do one of the following:

• Press and hold Alt+Control+Shift (Windows) or Option+Command+Shift (Mac OS) as you start Photoshop. You are prompted to delete the current settings.
• (Mac OS only) Open the Preferences folder in the Library folder, and drag the Adobe Photoshop CS Settings folder to the Trash.

New Preferences files are created the next time you start Photoshop.

this usually clears up any odd and unexplained problems that arise.

:)
retrocity