Hi
I am getting 'Service Unavaialble' outages on a relatively frequent basis recently with my DNN site - seems to happen about once or twice a week.
My hoster has given me event log - which says
Application pool 'colossus-it-solutions.co.uk Pool 2.0' is being automatically disabled due to a series of failures in the process(es) serving that application pool.
They are basically insinuating that there is a bug in DNN (I'm running 05.02.03), or that the memory resources it is requiring are too much for the shared server allocation. Can anyone suggest how I might go about resolving this? How much memory does DNN _need_ ? Is there a known issue with 05.02.03? Is there anywhere I can look for more info on why / where a potential memory leak is ?

Any help really appreciated, I have no idea how to address this, and of course customers are very upset by long site outages!

Thanks all
Rob

First thing you should do is check out the Event Viewer and see whats failing. 
Seconldy on your dev box IIS and SQL Server will grab whatever resources they can whether they need it or not so 200MB for the worker process is not unusual.
The Event Viewer should give you an idea of whats going on.
You can also set it to email you when its approaching "trouble time" and use it as an alarm.

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Philip Beadle - Employee

That never happens :) 
You could try setting your site up on another hosting company with a diff URL.  Make it easy and use the evotiva backup move restore tool. 
Hope you figure it out.

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Philip Beadle - Employee