It would be an internal MySQL Table issue. Simplest way I could think of putting it. XD Not exactly sure what you could do to fix this put WPM just might consider going into PhpMyAdmin(Or whatever the PHP host is for his server, MyAdmin is just the one I know of.), and rebuilding all the tables and such. Easiest other explanation I can think of is that we have to much PM space. :X It's probably exceeded some sort of a table limit or just overused a table and it's deleting stuff that hasn't been touched in awhile, so that it can write new stuff. In this case it would be to much space. Just my two cents.