Slow server statup

I am running Sunn App Server 8.1 Enterprise. I have a few different domains setup. I have a stange problem when starting a couple of them. It takes about 5 minutes to start the Http Service (Note the times from the log below). The domains start up fine they just take longer to start. Others start up very quickly. Any ideas on why this would occur?

[#|2007-03-15T11:28:13.763-0400|INFO|sun-appserver-ee8.1|javax.enterprise.syste m.container.web|_ThreadID=10;|WEB3042 : Starting HttpService|#]

[#|2007-03-15T11:33:39.062-0400|INFO|sun-appserver-ee8.1|javax.enterprise.syste m.container.web|_ThreadID=11;|info ( 4932): HTTP3072: [LS http-listener-1] http://USCRWSA0MFG01:3717 ready to accept requests

|#]

[728 byte] By [RussellJDa] at [2007-11-26 21:45:29]