>Uninstalling and then installing a new version of DxExperience and getting errors that the assemblies in the GAC cannot be deleted/updated etc. Look in c:\windows\assembly with explorer - no files. gacutil.exe /l = 0 files. AAARGH!.
>
>Turns out that in low memory conditions Windows 7 will shut off the Indexing Service which effectively shuts down the GAC - no read, no write, no see, no warning. Rebooting doesn't fix it, because it doesn't just stop the service - it turns it off as a Windows feature - just as if it were never installed.
>
>Turning it back on in control panel / windows features and then rebooting and the GAC is back - installing and uninstalling works again etc.
>
>Took a *lot* of googling and fiddling to figure this out, so I decided to post here hoping it may save somebody else the agony.

Wow - guess you are wishing for some MS devs to line up and slap them with the keyboard in Monty "Fishslap" style...