Backup is not running.

[Softzilla]

I have problem with running backup on my server. After start backup is down with following log:

Performing sanity checks: Performing cleanup operations:  Completed

Same thing for system-wide backup or user-only.

In same time DirectAdmin log have errors:

2009:01:20-12:43:10: Socket write error: fd is connected to a pipe or socket whose reading end is closed.  When this  happens the writing process will also receive a SIG_PIPE signal.  (Thus, the write return value is seen only if  the program catches, blocks or ignores this signal.)
2009:01:20-12:43:23: Socket write error: fd is connected to a pipe or socket whose reading end is closed.  When this  happens the writing process will also receive a SIG_PIPE signal.  (Thus, the write return value is seen only if  the program catches, blocks or ignores this signal.)
2009:01:20-12:49:30: Socket write error: fd is connected to a pipe or socket whose reading end is closed.  When this  happens the writing process will also receive a SIG_PIPE signal.  (Thus, the write return value is seen only if  the program catches, blocks or ignores this signal.)
2009:01:20-12:49:39: Socket write error: fd is connected to a pipe or socket whose reading end is closed.  When this  happens the writing process will also receive a SIG_PIPE signal.  (Thus, the write return value is seen only if  the program catches, blocks or ignores this signal.)

Service restarts not make any good. Backup path is write-enabled.

System: FreeBSD 5.4-RELEASE
MySQL was upgraded from ports 5.0.67 and working ok with DA (create users)

What's wrong? Please, help.