Whenever the purge Module Cache executes I get the following error alng with a couple of similar errors.  I End up with around 5 errors every 2 minutes in the event log but there is never any exception visible to the users.  This site is still under development so is never used in anger. There errors appear to interfere with other scheduled tasks and cause auto-mated emails to fail.  I think the error may relate to either an error in the path, a double \, or permissions as we have had other permission problems.  This is my first DotNetNuke application so it may be easy to resolve.
THREAD ID: 11
TYPE: DotNetNuke.Services.ModuleCache.PurgeModuleCache
EXCEPTION: Deleted 0 files, however, some files are locked. Could not delete the following files: D:\inetpub\vhosts\pm-associates.co.uk\httpdocs\Portals\0\\Cache\Modules\73_E7C58990483545070949CC00E4E64349.data.resources;D:\inetpub\vhosts\pm-associates.co.uk\httpdocs\Portals\0\\Cache\Modules\74_E7C58990483545070949CC00E4E64349.data.resources;D:\inetpub\vhosts\pm-associates.co.uk\httpdocs\Portals\0\\Cache\Modules\77_E7C58990483545070949CC00E4E64349.data.resources;
RESCHEDULED FOR: 26/08/2010 14:56:15
SOURCE: STARTED_FROM_BEGIN_REQUEST
ACTIVE THREADS: 0
FREE THREADS: 1
READER TIMEOUTS: 0
WRITER TIMEOUTS: 0
IN PROGRESS: 0
IN QUEUE: 4
Server Name: GLASGOW

Thankyou for the reply, I am currently waiting for my hosting provider to put on DotNetnUKE 5.5.0 so I will see how that works and if it i reolved and I will closen off this thread.  Hopefully this will resolve the issue.