Hi thanks for your reply, i deactivated all plugins, then switched to the Twenty Eleven theme, and tried resetting the plugins in my PhpMyAdmin. that didnt work still have the same problem, so then tried re-uploading all files & folders - except the wp-content folder - from a fresh download of WordPress. (3.4.1.zip) and i got this error message in my control pannel:
You attempted to load file with unsupported compression (application/zip). Either support for it is not implemented or disabled by your configuration.
I normally just update wordpress using wordpress-3.4.1.tar.gz, in my wordpress dash board, can you tell me a way to upload the fresh files? thanks so much for your help, jane