/tmp/ out of disk space

Hello,

I have a dedicated Linux (CentOS) web server located 2000 miles away that I have full root SSH access to.

I had some trouble uploading files from a web-based form to one of my websites so I checked out my diskspace using df.

It shows /tmp at 100% and /var/tmp at 100%.

Is this a problem?  What should I do?  

Is this a GOOD or BAD idea?

        rm -rf /var/tmp/*
        rm -rf /tmp/*

/dev/sdb5             10317828    767396   9026316   8% /
/dev/sdb1               101086     30267     65600  32% /boot
none                   1037156         0   1037156   0% /dev/shm
/dev/sdc1            241083332     94284 228742704   1% /disk2
/dev/sdb7            206927892  35177592 161238976  18% /home
/dev/sdb8              1035660   1034700         0 100% /tmp
/dev/sdb3             10317860   4532016   5261724  47% /usr
/dev/sdb2             10317860   2074264   7719476  22% /var
/tmp                   1035660   1034700         0 100% /var/tmp

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