When saving ( or trying to save ) the About Me text on the profile page, I receive a parsererror popup and nothing continues.  Firebug reports only what is obvious:

uncaught exception: parsererror

No other errors appear when enabling debug mode and such.  I wish I could be more descriptive but thats all I have.  Something with a plugin conflict, I think - and I experienced this a while ago too and can't remember how I resolved it.

The changes are actually saved, however.  I've deactivated all plugins and still receive this error; I have no additional javascript embedded anywhere on the site.