ImageResizer.ImageProcessingException ?

Hi Guys,

Recently I noticed that one of the production site is throwing loads of the ImageResizer.ImageProcessingException errors. At the same time RAM consumption increases dramatically leading to app pool recycle.

ImageResizer.ImageProcessingException (0x80004005): Failed to acquire a lock on file "E:\wwwroot\imagecache\1e\d1a022809295f272d4dc7c63377a759c0f336be0a1be8ca696fcf27479892cf1.jpg" within 15000ms. Caching failed.
   at ImageResizer.Plugins.DiskCache.DiskCache.Process(IResponseArgs e)
   at ImageResizer.Plugins.DiskCache.DiskCache.Process(HttpContext context, IResponseArgs e)
   at ImageResizer.InterceptModule.HandleRequest(HttpContext context, String virtualPath, NameValueCollection queryString, IVirtualFile vf)
   at ImageResizer.InterceptModule.CheckRequest_PostAuthorizeRequest(Object sender, EventArgs e)
   at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Any idea what could be causing that?

Many thanks,

Maciej