I am on NTL as well and I get errors every time I use IG mail. I always get a cgi timeout error when I send mail but it still gets delivered. I receive mail with no problems at all (or so it seems, I've not had anyone say they sent mail that I didnt respond to). I can never delete mail it hangs on the confirmation stage (the window never opens for it).
If I log in from work on a different isp, mail works without any problems. I dont have any different firewalls runing on the different machines so I can only assume it is something to do with NTL & Ryzom.
I also experience problems loading cgi apps on web sites (I use firefox) when Ryzom is running but again I don't get the same problem from work which seems to point even more so to NTL+CGI+Ryzom screwing up somewhere between them. How, what and where I havent a clue

but maybe with some collated info some guru can work it out
Forums works fine as does tickets.....