missing temp directory?

I'm sorry I'm spamming the list today, but I actually have time to do some bug testing today.

In the logs, I've noticed this:

[06-Dec-2005 14:19:37] PHP Warning: mkdir(temp/1962c11578bbf49800aa6f6593f9f3af): Permission denied in /home/public_html/webmail/program/steps/mail/func.inc on line 1202 [06-Dec-2005 14:19:37 -0500] PHP Error: Failed to write to temp dir in /home/public_html/webmail/program/steps/mail/func.inc on line 1214

I've looked through the code at 1202 and 1214 and it seems its trying to write to a temporary directory. What's the full path under the roundcube installation where its trying to write to this temp directory?