Well, its a safe assumption that a lot of you guys have checked out the UT2003 demo by now... You can still grab it over at FileShack without any wait times now, here are a bunch of notes on the demo from Epic:

• You need to have DirectX 8.1b installed to play the game successfully.  If you get a crash on startup or at a random time during gamplay, this is likely to be the cause.   Download it from Microsoft's DirectX site.
• We'll be releasing a small patch tomorrow.  This will fix a number of reported bugs, and also serve as the first public test of UT2003's new auto-update feature.
• There was a bug in the server browser that caused it to crash frequently under heavy load.  This wasn't triggered until thousands of servers came online.  We found a master server-side fix for this so the problem should be gone now.  Sorry for the inconvenience!
• Server admins, if running multiple servers on one machine, please give each server a port number differing from the others by at least 20: for example, 7000, 7020, 7040, ...   To work around the bug mentioned above, we had to ban servers that are running on consecutive port numbers.  Restarting servers using the new port number guidelines will bring them back online.
• The master server was intermittently down or unresponsive earlier because Epic's Internet connection was flooded.   We've moved it to a much faster server offsite and it should be running fine now.
• Several other crash bugs have shown up significantly in the bug reports.  We're looking into these.  Thanks to everyone who has submitted bug reports to ut2003bugs@epicgames.com.
• UT2003's global player statistics tracking system will be coming online tomorrow.   To use it, you'll need to turn on stats tracking from the settings menu, and choose a unique name and password.
• Yes, UT2003's Joystick support needs work.
• Be sure to read the UT2003 Demo Frequently Asked Questions for information on other known issues and workarounds

Also, support for ASE and Pingtool are coming 'shortly' according to Sweeney.