Can't Install New Sources After 3.0 Jailbreak

[luv2hnt1]

It comes up and says could not find repository says I must be trying to install a legacy installer repository these arent supported.please help!

[blkcadi]

Show us the repo http: address your trying to use, maybe we can help.

[bikecheez]

i have this same problem
i tried to add
http://repo666.redsn0w.com
ultrasn0w.com
i cant add anything

used redsn0w to get cydia on my iphone btw
in case its relevant

[blkcadi]

^ the address is incorrect for ultra.
It's http://repo666.ultrasn0w.com/

[eddie6]

i have a problem trying to get ********** on ipod jailbroken ipod touch 2g can you help???

[lxc3049]

I have similar problem. After jailbreaking my phone, I opened Cydia and added repo666.ultrasnow.com. I get an error message: GPG error: http://repo666ultrasn0w.com/ The following signatures were invalid: NODATA 1 NODATA 2. Also, another message: Failed to fetch:http://repo666.ultrasn0w.com/./Packages.bz2 Sup-process bzip2 returned an error code (2). What should I do?