strange behavour

My site with PageBlaster has been running just fine for a couple weeks since I touched it. This morning my wife couldn't access the page that has our database and ListX modules on it. She got the yellow screen of death.  I went to my office and I too got the RemoteOnly message, After enabling errors and a application restart, I got.

Stack Trace:

[UnauthorizedAccessException: Access to the path 'b6f656e76090820f99c8eeb7ae458628.pb.webinfo' is denied.]
   System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) +1971539
   System.IO.FileInfo.Delete() +152
   Snapsis.HttpModules.PageBlaster.Utils.CleanFolders(String path, TimeSpan cleanupInterval, Boolean recurse) +256
   Snapsis.HttpModules.PageBlaster.Utils.CleanFolders(String path, TimeSpan cleanupInterval, Boolean recurse) +380
   Snapsis.HttpModules.PageBlaster.Utils.CleanFolders(String path, TimeSpan cleanupInterval, Boolean recurse) +380
   Snapsis.HttpModules.PageBlaster.Config.Settings.GetConfig(HttpApplication app) +454
   Snapsis.HttpModules.PageBlaster.ResourceLocationController.RewriteVirtualPath(HttpApplication app) +16
   Snapsis.HttpModules.PageBlaster.PageBlasterModule.BeginRequest(Object sender, EventArgs e) +13
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +92
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +64

Version Information: Microsoft .NET Framework Version:2.0.50727.832; ASP.NET Version:2.0.50727.832

I turned of PageBlaster and all was well. I suspected that somehow "by magic" the permissions on the directory where PageBlaster stores it cache changed. I deleted the ..../portals/_default/cache/tabid directory. I re-enabled PageBlaster.

I confirmed that it was doing the substitutions on my pages. However, it wasn't writing into the cache directory and isn't entereing any exceptions in the event log. 

Any ideas? How do I tell if PageBlaster is caching other than looging for the "webinfo" files?  The site appears to be running about as quick as it does when pageblaster is running. Is there some other place I should look for files?

In the past week there have been a couple of stange things happen to my site after PowerDNN's servers went down "supposedly for MS automatic updates"  The other of IIS default documents changed and index.htm moved ahead of default.aspx.

I just re-read the error and it says "path may be full". What does PB do it it hits the limits of its cache.

They may have put in a disk quota on your account.  You should probably check with PowerDNN to see if something changed.

You can configure PageBlaster so that it does not go beyond a certain amount of disk space by setting the disk-size-limit attribute in the Snapsis.pageBlaster.config file.

PageBlaster is probably working normally caching pages to memory, even though it doesn't appear to be writing any to disk.

You can verify this by turning on Debug tracing in the config file and restarting the site.

< trace level="Debug" file-path="/PageBlaster.trace.config" />

If you do this then make sure you disable debug tracing after you have captured enough information because that file can get large very quick if you have a lot of traffic.