Question : OWA Service Unavailable Intermitently

Hello Experts,
I have a Server 2003 standard server running exchange 2003 sp2.  All windows updates have been run.
The problem is with OWA, which gets 'service unavailable' intermitently.  
Observations:
-OWA is very slow to load when it is successful...it is also very slow to load when the service is unavailable.
-the default website (exchange owa) in IIS manager is running, but the 'web sites' folder many times has a red X
-the service unavailable issues occur when using http://localhost/exchange on the exchange server
-a mail server test via www.mxtoolbox.com shows 10+ seconds for transaction time which it notes as 'very bad'
-no alarming events are being logged.

Any assistance would be greatly apreciated

Answer : OWA Service Unavailable Intermitently

I opened a paid support case with msft.  turns out it was a service called "printer supervisor"  I disabled and removed this server and all was better.

thanks for your help
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