Not sure if this is happening to anyone else but it takes me frequent attempts to log in....I get an error to the effect that .php is invalid or somethin'

-s

I noticed this earlier; I believe the login form that is in the navigation bar on top is pointing to the incorrect script or has incorrect arguments.
I was successful in logging in using the one below the navigation bar, though.

Yeah, I've been getting that since some time last night. So I use the one in the center of the page instead of the one in upper right hand corner.