Came in today to find our Filr install non-responsive. The web interface was down/non-responsive, and the desktop client was telling users that their username/password was incorrect. Anyone who tried to enter their password into the client was met with an AppCrash in Windows 7 x64. I tried restarting famtd and looking over logs but there isn't much guidance on where one should look for trouble.

I run a "large" install with a Filr server, mysql server, and search server. Restarting the File server brought everything back to life. I really want to roll this out to users but I need to know why it crashed and how to prevent it.

Where should I start?