linux - Quota exceeded after reboot (ubuntu) -

system ubuntu 11.04.

server located @ idc, , today had problems led server being rebooted.

uploading files doesn't work now, , tried creating files vim/nano/pico, gives me error: error writing: disk quota exceeded

now, how can be? user setup virtualmin , user has unlimited storage. tested deleting 10gb backup file, didn't help.

all partitions have 0-9% usage.

any in resolving matter appreciated.

df -h:

filesystem            size  used avail use% mounted on /dev/sda1             443g   11g  410g   3% / none                  7.9g  196k  7.9g   1% /dev none                  7.9g     0  7.9g   0% /dev/shm none                  7.9g  120k  7.9g   1% /var/run none                  7.9g  4.0k  7.9g   1% /var/lock /dev/sdb1             917g   74g  797g   9% /home 

df -i:

filesystem            inodes   iused   ifree iuse% mounted on /dev/sda1            29483008  532200 28950808    2% / none                 2055317     781 2054536    1% /dev none                 2057206       1 2057205    1% /dev/shm  none                 2057206      54 2057152    1% /var/run none                 2057206       5 2057201    1% /var/lock /dev/sdb1            61054976  653042 60401934    2% /home 

quota -v:

disk quotas user myuser (uid 1069):   filesystem  blocks   quota   limit   grace   files   quota   limit   grace  /dev/sdb1 9855440       0       0           86653       0       0 

problem fixed.

it group quota problem.

quotaoff -g /dev/sdb1 (which holds home directories) turned off group quotas.

this post pointed me in right direction.