Considering the amount of traffic that site is trying to push because so many individuals are trying to install or update programs it may be a bit before it gets better. I was able to update with no issues at all last night about 11:30 PM CST.
What's the correct repo address for modmyi? I keep getting the bin/bin2zip error and I think it's coming from the modmyi repo. I had to add it manually after the 4.2.1 gp jailbreak. I might have added it wrong...