Problem inputting to edit fields

Hi

I'm having a problem with my edit fields in the admin section. I can go in and edit one or two fields, but when I try to input info to another field the cursor won't go in to text area. I have to save what I am doing and then go back in to edit the record. I've tried it in both Firefox and IE and both have the same problem. I clear my cache, but this doesn't seem to help. This seems to have started after the most recent upgrade.

Thanks