I recently upgraded our GW8 to new hardware and eventually to 2012 sp1, now I'm seeing the following error in the GWIA log and the GWIA is not listening on its http port.
There is nothing listening on 9850 (default http port for gwia).

****** 04-10-13 10:03:39 ******
10:03:39 F476 ****************** Agent Restarted ******************
10:03:39 F476 MTP: Message Transfer Protocol initialization...
10:03:39 F476 MTP: Queue initialization...
10:03:39 F476 MTP: Queue initialization...
10:03:39 F476 Startup: No frgnames.cfg file found.
10:03:39 F3C7 Starting GWHTTP-Listener
10:03:39 F476 HTTP server running
10:03:40 F476 Error Listen Port is already in use. [856A]
10:03:41 F476 Shutdown of Threads
10:03:42 F476 Shutdown of Threads
After disabling GWIA POP / IMAP / LDAP (setting them to port 0) I'm getting the following(and still no http):

10:08:12 F476 ****************** Agent Restarted ******************
10:08:12 F476 MTP: Message Transfer Protocol initialization...
10:08:12 F476 MTP: Queue initialization...
10:08:12 F476 MTP: Queue initialization...
10:08:12 F476 Startup: No frgnames.cfg file found.
10:08:12 F3E7 Starting GWHTTP-Listener
10:08:12 F476 HTTP server running
10:08:13 F476 Error, Internal Udp Port is unusable. [8911]
10:08:14 F476 Shutdown of Threads
10:08:15 F476 Shutdown of Threads
GWIA is listening on the following ports, 1.2.3.4 being the server ip and I removed the POA connections.
# netstat -pan | grep -i gwia
tcp 0 0 1.2.3.4:7060 0.0.0.0:* LISTEN 12253/gwia
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 12253/gwia
udp 0 0 0.0.0.0:41547 0.0.0.0:* 12253/gwia
Any ideas ?

Besides this GW is running just fine.