Intermittent 401 Unauthorized

Hi

i see intermittend 401 Unauthorized. Especially Images and it seems to affect only HTTP-Modified Requests. The user experience is almost ok.

in the logs i see:

Database                             ab1a9 High     Failed to get document content data. System.ComponentModel.Win32Exception ..
SharePoint Foundation Files   abq2i High     Could not get DocumentContent row: 0x80004005

regards

Markus