Private Messaging has been disabled till the problem is resolved, You will not lose your PM history, it is just not available to you for a while. Apologies for any inconvenience.
you must be receiving private messages asking you to change passwords and the like. please note that we admins/moderators do not send such notices or solicit your passwords. please delete these messages and do not click on the links in such messages. a security-tool2010 malware/rogue site tries to bait you in visiting this site which will then infect your computer. please follow sound security practice and advice in browsing websites or clicking links. use a firefox browser if you can (or google chrome) and do not install anything unless you are very very sure.