Ok this is something I picked up from my days in beta and live as a mod, and it seemed to help a lot of people, and as its a standard fix, I thought I'd post it.
If your game client doesn't update properly, or you have difficulties logging in or any problems remotely client-related... here's the first thing you should do:
1) Go to your main MxO game directory, and delete the *.zcf files. To be uber-thorough, you can delete the Profiles directory as well.
2) Restart MxO, and do a Full System Check.
If you're getting update errors and are in the UK using any of the following as your ISP:
ntl
ntl:Freedom
Virgin.net
Tesco.net
Which.net
You will need to add a proxy server into your Internet Options. Here's how you do it:
With Internet Explorer open:
1) Go to "Tools", then "Internet Options".
2) Click on the "Connections" tab.
3) Click on "LAN Settings".
4) Put a tick in "Use a proxy server for this connection".
5) Add the following in the "Address" and "Port" fields:
Address: 62.252.192.4
Port: 8080
6) Click on "Ok" and then "Ok" on "Internet Properties".
If that proxy server address doesn't work, you can use any proxy server from the list on this site:
Hope some of you guys find this useful! 
Message Edited by TSR-Joel on 08-17-2005 10:12 AM
