title: Sharepoint: DLLs disappearing from the GAC
body: <p>I'm fairly new to SharePoint but I'm learning fast. However, I've encountered a confounding issue that has me completely stumped, and the internet hasn't been able to provide anything useful as of yet...</p>
  
  <p>I'm running <strong>SharePoint 2010</strong> in a VM, and I am getting a <strong>repeated issue with <em>libraries spontaneously disappearing from the GAC</em></strong>. This is happening on average about once a day at the moment, but at different times of day and with <strong>no apparent trigger</strong>. The VM I am running (and the source code thereon) are identical to my colleagues', yet I am the only one to have encountered this issue. I have <strong>rebuilt my environment several times</strong> and thought I'd cracked it with this latest one, but the issue has just reoccurred. Since it happens at different times of day I don't think it can be a timer job, and it can happen <strong>spontaneously with no user input</strong> (no changes to code, settings, environment, anything).</p>
  
  <p>I can provide more details of the libraries affected if required, although it seems to be a <strong>mixture of proprietary libraries specific to the project, and standard Microsoft assemblies</strong>.</p>
  
  <p>Any help or pointers would be gratefully received!</p>