I suspect it's either related to decay or stability, have you ruled either of these things out?

I have the nodecay plugin installed and I have the zone manager flag set for no stability. I removed the old structure and pasted it back and recreated the zones and flags last night. So far the are holding. Is there something else I should take a look at?

Also I m not sure this could matter but it all this did start after I opened another server with a different provider. The provider copied aal my file from the one server over to the new one. They are both up and running and are identical except in name, the problem is on both servers. could something have gotten coruupted when this was done??

Have you tried the global stability flag as opposed to a nostability flag via ZoneManager?

I am not sure how to do that exactly. does that turn of stabilty for the entire server?

Yes, I realize you probably don't want to do that permanently, however it would allow the plugin author to determine whether or not stability is at fault.