2.8.3 admin is dead slow, front end OK

Hello, I updated to 2.8.3. Normally I do this manually via FTP; removing all files and uploading new files. But this time I used the backend to auto update.

I notice that logging into wp-admin, or clicking on any backend function takes about 2 minutes to load a page!

The front end of my site runs fine and at normal speed.

I have only 6 plugins.

I’ve tried wp-admin on Safari, Firefox, Camino and no luck.