Thanks for the heads up, everyone! My wife has brought it to my attention and it seems that we are having some severe problems with our hosting. Long story short, everything was fine and hunky-dory until my original webhost decided to sell my account to a new host. The new host never felt quite as good and is apparently going downhill fast. I'll see if I can look into moving the site in my spare time (ha!).
EDIT: As an aside, I have far more options if I don't need to host GCCG. Does anyone really use it anymore?