I broke my PM box....again...
 

I'm having a hard time sending PMs out again. They show as being sent, then when I close my browser, or navigate away from the page and return to the sent page its gone.

I know at least 3 PMs did not make it to the recipient starting from Saturday onwards to tonight.

Hmm, that is unusual. My website uses the same forum software (vBulletin), but I wouldn't have the slightest idea what would cause missing pm's :(