Strange database errors (Errcode 17)

[<?netwire>]

I was wondering if anyone could help me debug this error:

Can't create/write to file '/tmp/#sql_edc_0.MYD' (Errcode: 17)
File: /home/mijin/public_html/darksanctuary/Sources/Profile.php
Line: 1323

-and-

Can't create/write to file '/tmp/#sql_edc_0.MYD' (Errcode: 17)
File: /home/mijin/public_html/darksanctuary/Sources/Post.php
Line: 1926

(forum located at darksanctuary.info) - Seems to be an intermittent problem.

[jerm]

You or your host will need to empty the server's /tmp directory.