It may not be a GoDaddy problem. It sounds like someone got your user ID and password. Perhaps you had a keylogger virus on your PC.
Make sure that you are using a secure password. It needs to be at least 10 characters long, with a mix of letters, numbers and characters.
You should feel lucky that someone has not transferred all of your domains to another account at a different registrar.
You can probably figure out who did it by looking at the WHOIS record for the forum that your domains were redirected to.
How could you NOT notice that your domains were redirected for that long?
"It's inexcusable for scientists to torture animals; let them make their experiments on journalists and politicians." -Henrik Ibsen