MSRepl_command table growing - cleanup job failing

I have a separate distribution server - SQL 2005.

My Distribution cleanup job is failing with the following error:

Executed as user: <user>. Could not remove directory '\\<server>\REPLDATA_BK\unc\LNGOKCSQLP003_BANKRUPTCY_BK-SMALLER TABLES A-C\20071203122870\'. Check the security context of xp_cmdshell and close other processes that may be accessing the directory. [SQLSTATE 42000] (Error 20015).  The step failed.

However the error in the agent log says this:

Replication-@rowcount_only parameter must be the value 0,1, or 2. 0=7.0 compatible checksum. 1=only check rowcou: agent distribution@rowcount_only parameter must be the value 0,1, or 2. 0=7.0 compatible checksum. 1=only  scheduled for retry. Could not clean up the distribution transaction tables.

When I log in as the agent service account (also the account the job is running under) and exec the following:

There is no problem.

I saw one other thread marked "answered" on here about this same issue, but no answers.

Can someone help?

Thanks,

Deb