I'm running live CD version of 1.2-Release with configs stored on a usb thumb drive.
After running for about 55 days, I found out I can't accessing anything under the
/cf or /tmp/mnt/cf mount point anymore

The mount still shows up from mount and df -k but I can't even do a proper
ls -al /cf

A short while after I discovered this issue, the Traffic Graph stopped updating as well.
(clock keeps ticking, but no data)

A reboot was required to clear this. (i.e. the thumb drive itself is okay)

So, my questions are… anybody seen this before?  Known issue? Any fix?  I don't want
to reboot my router every X days.

Thanks!