Crash when zoning.

[Argh]

I've been having this issue off and on since earlier this year (I can't remember the specific patch which started this issue). Currently it's worse than ever.

Every time I zone I crash to login screen.

Sometimes it will take me more than 10 attempts to get back in from the character select screen without crashing (atm I'm on attempt #15 trying to log back in to ec.) Usually, after my first login in which I don't crash, I immediately desync.

Some things I've tried:

Uninstalled/Reinstalled Everquest.
Uninstalled/Reinstalled Windows.
Used Wine on Mac OSX.
Disabled UAC.
Wifi and wired connection.
Deleted EQClient.ini.
Deleted uifiles.

Has anyone ever had the same or similar issue?

Appreciate any feedback or thoughts.