Chelle, have you tried rebooting your internet modem or your wireless router (if using one)? I've had similar problems with other sites when my wireless router or modem got out of sync. Sometimes they would connect properly, sometimes not. I just unplugged and re-plugged the power cord of the router/modem and it would sort its self out. Not an expert of any kind here, but just throwing out ideas.
Of course, as mentioned, it could also be your ISP.... In my experience, ATT's DSL has become really flaky and they are often the cause of the problem for me.
