Thanks Brian.... this is a nasty one. I've filed tickets with both the hosting service people and the software providers, and I hope one or another can help. Methinks it's a trojan which has been written to deliberately take down this domain to "punish" us for...??? I don't know but it has my full attention.
I do know that this evening (EST) I will be taking the whole thing down to upgrade regardless... I'll give everyone as much notice as possible. I'm just sorry for this 15 minutes past the hour thing - I know it's frustrating!