My httpd error log is full with these kind of errors

[Tue Oct 16 03:57:19 2001] [error] [client 212.171.41.160] File does not exist: /home/sites/site15/users/oblivion/web/board1/ultimatebb.cgi
[Tue Oct 16 03:57:19 2001] [error] mod_gzip: EMPTY FILE [/tmp/_1832_1931_1832.wrk] in sendfile2DOes anyone know
[Tue Oct 16 03:57:19 2001] [error] mod_gzip: Make sure all named directories exist and have the correct permissions.

Does anyone know what this means?? And what i can do about it.

do you think your dir. mentioned have the correct path? and exist like the log said? check it first...

u want to install mod_gzip using in Apache?

Yes, the path exists, mod_gzip even creates those files in that dir. It just seems randomly those files disappear before mod_gzip is done with them.

The dir is also right chmodded because files are created.

The error only occurs every 10-15 secs or so. while there are much more requests to the server. So not every html/php output produces an error. Just some pages.