I am trying to backup the databse on my wordpress blog and i
get the message: Database failed to backup. Backup file size is 0KB.
It is a complete wordpress blog with five pages.
Also I can't automatically update any of the plug-ins.
I get this message
Downloading update from http://downloads.wordpress.org/plugin/adsense-manager.zip
Unpacking the update
Incompatible archive: PCLZIP_ERR_BAD_FORMAT (-10) : Unable to find End of Central Dir Record signature