Hey Ingrid, err, Mark
Cleo is absolutely right (as usual!). With the kind of money you're making, you can easily afford a change of host now. You definitely need a host that is made for adult webmasters. I'm swapping 4 sites myself after I finish moving house and will probably go with M3 - then I can blame Cleo if they fuck up! If M3 aren't what you want, email me and I've got a couple others that aren't as good, but better than what you have now.
Kris