i'm having more or less the same problem.

Server: Sargatanas
When?: AFTER data center moved
Where?: anywhere, dungeons, normal world areas

My connection status changed from EXCELLENT to GOOD when the Data Center changed location andddddddd whenever i DC it takes about 5-10min before i can log on again ('character is still logged in the game') - while it isnt because my husband is in the same party and sees a greyed OUT name and 'log out' chat reference.

Together with the lag, this made it pretty much impossible to play and i don't look forward actually to continue playing like this (dcing alot (90king) and not being to get back on again and having ping-lag).

I hope you guys can also look into this