Details:
Ever since the 24th/25th September updates to Final Fantasy XI I have been unable to launch FFXI from Playonline Viewer on the PC. I have a Xbox 360 on the same network which is still fine.

Steps:
1. login Playonline Viewer sccuessfully
2. Select Play or Play on Test server (I got both installed)
3. POL disappears
4. POL comes back with no errors

Date & Time: 25th September around 10:00pm BST

Frequency: Always

Platform: PC

PC Manufacturer & Model Number: Alienware Aurorra 7500

OS: Windows 7 32bit

Graphics Card: Nvidia Geforce GTS 250

ISP: TalkTalk

Type of Internet Connection: ADSL