[xwiki-users] Backing up xwiki using mysql

Hi All, Running ... mysqldump nms_wiki > backup.sql Returns ... mysqldump: Error 2020: Got packet bigger than 'max_allowed_packet' bytes when dumping table `xwikiattrecyclebin` at row: 2 I did have some rather large import attachments - which I deleted but they seem to have gone into the recycle bin - so I used the code snippet http://extensions.xwiki.org/xwiki/bin/view/Extension/Empty+Trash+Bin To supposedly empty the bin, but get the same error above when I try and dump the database seeming to indicate the recycle bin isn't empty. Tried increasing the max_allowed_packet when I run mysql, but doesn't seem to have any affect - is something overriding it? We're running on Solaris. Any ideas/help would be appreciated so I can backup the wiki successfully on mysql!!!! Thanks. Regards, Richard