I have just upgraded from open source 4.5 to Network Edition v5.0.6 and I can login to mail accounts on the server but when I try to start the admin console it stays stuck on the loading screen.

url
https://mailsvr.*mydomain*.net:7071/zimbraAdmin/

Output form zimcontrol
[zimbra@mailsvr bin]$ ./zmcontrol -v
Release 5.0.6_GA_2314.RHEL4_20080522092131 RHEL4 NETWORK edition

[zimbra@mailsvr bin]$ ./zmcontrol status
Host mailsvr.*mydomain*.net
antispam Running
antivirus Running
ldap Running
logger Running
mailbox Running
mta Running
snmp Running
spell Running
stats Running

I can see no errors in the zimbra or systems logs, everything worked before the upgrade and users can login now with no problem. I have tried several browsers os x 10.5 Safari 3.1.1 and Firefox 2.0.0.14 and windows xp Firefox 2.0, The result is the same I enter my admin login and see quite a bit of activity on the status bar of the browser but the page never changes from the loading screen.

Any help with this would be greatly appreciated.

Sam