Well I finally got myself an iPhone! Woohoo!

It's used and not new so I restored/jailbreak'd/unlocked and everything works great.
But I hit a snag.

I've installed Make It Mine and Summerboard but now I can't seem to download anything through the Installer. I know my Wifi is working because I can browse webpages no problem, so I've been trying to install OpenSSH and Services for about 20 minutes now without success. The "Downloading package" bar comes up at the bottom but it won't move. Then after about a minute it'll time out.

Anyone know what could be wrong? I've tried restarting the phone several times but nothing seems to work...