Thank you for your post. I apologize for the late response.
Can you try reinstalling FileMaker Pro 11 to see if the issue persists? If it does, you might also want to try removing the plist files for FileMaker Pro 11.
To do this, head to /Users/<your user>/Library/Preferences/. In there, delete any files that begin with com.filemaker.
Please let me know if you still run into issues after trying these steps.
I found that I had upgraded to OS 10.6 and brought along PGP Desktop Pro with the migration. It is not compatible with OS 10.6 and no longer supported.
My FileMaker Pro problem was the only place I noticed any changes. I uninstalled PGP Desktop Pro and the problem went away.