Multiple Probs: Insufficient Resources, FS Check, etc.

Hi there!

I just fell too in the same situation as of today... I am an IT guy, but not that much linux... I'm missing some details on how to clear the log files.

My df -h looks like that:

NAS:/c# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/hdc1             1.9G  2.0G     0 100% /
tmpfs                  16k     0   16k   0% /USB
/dev/c/c              694G  527G  167G  76% /c
/c/Divers             694G  527G  167G  76% /home/ftp/Divers
/c/PartagePat         694G  527G  167G  76% /home/ftp/PartagePat
/c/Software           694G  527G  167G  76% /home/ftp/Software
/c/backup             694G  527G  167G  76% /home/ftp/backup
/dev/sda1             1.8T  522G  1.3T  29% /USB/SeagateExt
NAS:/c#

So I guess my hdc1 device is full... How do I clean it up? The bigges file listed on ls /var/log -ahlS, is only 94M...

Oh my device is a ReadyNAS duo with 2 750gb drives about 70% full...

Thanks for the help!

EDIT:
After a hardware reboot (the web interface did not want to reboot or shutdown the Duo but I thought it did), my hdc1 is at 96% (1.9G on 1.9G). I regained access to my shares without having Windows popping weird error messages. I am still interested to see which files I can target for deletion to give me room for another 2-3 years...