What tools (out of the box or otherwise) do you utilize to give useful/verbose information about what might be causing an issue with windows sharing?
I have a specific example below, but I'd like to see some general answers for how to collect data on the performance/stability characteristics of windows shares.
Edit: As Izzy noted below, my specific example might be indicating a deeper issue, so I am looking for some specific tools/logs I can look at to get a better indication of what might be occurring, the example is just there to show one scenario.
Edit2: Sadly, I never found out why this was occurring. We rolled back in time to a "known good state", and removed all traces of antivirus software from the machine. This is largely the same as "yep, reinstall".
Thus I'm marking John's as the correct answer, albeit a bit frustrated I never was able to find any tools for troubleshooting Windows sharing issues.
I have created a regular smb share (not DFS) on a Windows 2008 server, and the share is normally accessible by the clients (thus, the permissions as created seem to be a non-issue)
However, after a random amount of time (and perhaps accesses against the share), that share disappears for the client, and becomes inaccessible over the network.
However, the server is not busy at all, and seems to happily accept requests for other network services without a hitch. Rebooting the server will make the share accessible once again until the problem resurfaces shortly thereafter.
The general System/Application/Security event logs show nothing out of the ordinary.