When 2.8 was released, I installed it and tried to compile and got the same errors.
Because my IP was blocked, I took my laptop to school and tried to install a package there, and got the same error. So I'm pretty confident that it is not my setup, but I can't find anything about the repositories all being down, and it seems unlikely that they would be down right after the release of a major upgrade.
Just in case it's useful, here is the error output that I got when I tried to install the xcolor package just now.
Code: Select all
MiKTeX Problem Report
Message: Not a valid remote package repository.
Data: http://mirrors.med.harvard.edu/ctan/systems/win32/miktex/tm/packages/
Source: C:\work3\miktex-2.8\Libraries\MiKTeX\PackageManager\PackageManager.cpp
Line: 2368
MiKTeX: 2.8
OS: Microsoft Windows XP Professional Service Pack 3 (build 2600)
SystemAdmin: yes
PowerUser: no
Root0: C:\Documents and Settings\craigim\Application Data\MiKTeX\2.8
Root1: C:\Documents and Settings\craigim\Local Settings\Application Data\MiKTeX\2.8
Root2: C:\Documents and Settings\All Users\Application Data\MiKTeX\2.8
Root3: C:\Program Files\MiKTeX 2.8
UserInstall: C:\Documents and Settings\craigim\Application Data\MiKTeX\2.8
UserConfig: C:\Documents and Settings\craigim\Application Data\MiKTeX\2.8
UserData: C:\Documents and Settings\craigim\Local Settings\Application Data\MiKTeX\2.8
CommonInstall: C:\Program Files\MiKTeX 2.8
CommonConfig: C:\Documents and Settings\All Users\Application Data\MiKTeX\2.8
CommonData: C:\Documents and Settings\All Users\Application Data\MiKTeX\2.8