There are some things I very dislike in ut2k4 servers (TCP servers too), which had no place in old and the best Unreal 1:
- camper timeout - it's too short! I have 512 MB of RAM and loading map takes some time. When I'm in I have decreased health/shield already because of camping

- idle timeout - it's too short too! You can't even say hi and ask one question when you are kicked off
I know that ut2k4 is not a chat program, but sometimes ppl need to comunicate f.e. for help. It is impossible now 
- TCC anticheck - I know nothing could be done, but I have a slideshow when it checks
In Unreal there was only a while, but now it is checking too much, it takes even 30 secs. I have ut2k4 converted to my language (such distro) and I even had to find and replace fonts package to original one (international), because I was kicked from servers
Now I see strange symbols in place of my national chars (all text/strings are converted to my language and there is no possibility to make it english
)
Maybe there are some config parameters to make TCC taking less resources?
BTW: TCP logo is very nice