Well, about 2 months ago I couldn't connect to FFXI again (just after the last update). I don't remember the number (POL-xxxx) of the error, but POL couldn't connect to the update server. First time it happened to me. I used GM Call, and the GM told me to uninstall my Firewall. I didn't, I just disactivate it while POL is connecting to the update server, then quickly activate it back, and no more problems. So check it if you have a firewall.
(Well, anyway, I really dislike the tech you usually speak with... "Some in-game animations are bugging. My char split in symetrical squares when I use SA for example." GM : "Throw your modem away and buy a new one." Me : "So, I'm having graphic troubles, and I need to change my modem to resolve this ? ..." GM : "Absulutely. You can also switch back to the <version> drivers of your Graphic Card, it should also work." "Me : All right. I'll try this ... Thank you." -_-)
(Soory 'bout the grammar/vocabulary, can't speak english very well ... /em slaps her own face.)