Multiple Probs: Insufficient Resources, FS Check, etc.

The disk_usage.log (one of the ones not found under /var/log, but can easily be generated using "df -h" via SSH) is one of the first things to look at if you have major OS issues and experience problems such as not being able to download the logs. For one reason or another rarely there can be a problem where the OS partition fills up. It is odd that those logs got that full. Looking occasionally at how full the OS partition is, is a good idea. Normally there should be plenty of space free.

Now it is possible that some things on the OS partition could've got corrupted so normally when you have an issue like this it's best to work with tech support to diagnose the issue and correct it.