Suspected problem w/ autofs and xauth

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I've been battling with an extremely annoying issue that I believe is related to autofs. My home directory is mounted over NFS using autofs 4.1.4 (as supplied with Kubuntu Hardy). I've used this setup for years over perhaps a dozen different distributions without any particular problems.

Since moving to the Hardy distro, the problem is this: If I leave the system idle at the KDE desktop for more than a few minutes, any and all attempts at opening new windows fail with an error that they cannot obtain X authorization. If I simply do an 'ls' in my home directory and try again, it works fine. I believe this is being caused by the automounter timing out, but I do not find any log messages from the automounter under any circumstances, so it's difficult to prove. If I do an strace on the X application, it appears to be unable to read ~/.Xauthority (which is there and can be read after triggering a remount).

Is it possible that autofs behavior changed in a manner such that a stat of ~/.Xauthority is no longer sufficient to trigger the mounter?

Any suggestions (or even WAGs) appreciated. I'd love to swat this annoyance.

Steve


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