Disapearing classified adds ?

Is anyone else having the problem of there sale adds disapearing?
I have had to repost my adds two times, I thought that I had fallowed the rules for posting correctly, but this morning I check them again, and there gone, so I PM the members that have had interest in my adds, telling them that the parts are still for sale, I then go back to the classified section, and low and behold, there back!, I don't get it, but it sure is getting to be alot of work.