Blank screen when trying to create new POST/PAGE

Have you tried:

– deactivating all plugins to see if this resolves the problem? If this works, re-activate the plugins one by one until you find the problematic plugin(s).

– switching to the default theme to rule out any theme-specific problems?

– resetting the plugins folder by FTP or phpMyAdmin? Sometimes, an apparently inactive plugin can still cause problems.

– re-uploading the wp-admin and wp-includes folders from a fresh download of WordPress?

– increasing your available memory?

I have done all of the above and I still get a blank screen. This all occured when I upgraded to WP 3

I had this problem with WP 3 and it was solved by deactivating the WordPress Stat plugin