Is the time / date / year set correctly on your server?

Do you have a firewall blocking the SnitzBitz cookie?

Time/Date set to atomic clock, that's not it. No SnitzBitz values in hosts file or I wouldn't even see the page. I can enter user/pw, but it just gives a permanent hourglass until it finally times out trying to login.

Security software is different by necessity, servers won't run most desktop security programs. But without any changes to software, it can no longer login to SnitzBitz. I deleted all cookies, and could re-login to numerous other Snitz sites (including this one) from the server, just not to SnitzBitz. I will take it offline and uninstall, reinstall security software to double-check.

Install Fiddler and analyse the http traffic between your browser and SnitzBitz. It should give you a clue as to what it going wrong.
http://www.fiddler2.com/fiddler2/

Have just tried from a couple of different servers with different OS:

1. Windows 2003 Standard (32bit) server with all the current hotfixes and patches, ClamWin AV with no issues at all
2. Windows 2008 (64bit) server with all the current hotfixes and patches, McAfee AV with no issues at all (behind more firewalls than I can poke a stick at)
3. Windows 2003 R2 (32bit) server with all the current hotfixes and patches with no issues at all (behind more firewalls than I can poke a stick at)

All 3 severs are from different locations 2 locations in Australia and 1 from the USA so it is not a site issue, could be your profile issue on the server. Log on to the server as another Administrator, rename the profile of the user that you use to something like username.old and then logon as your user and see if that works.

Sometimes your profile on a server, or a desktop system can become corrupt and needs to be reset..