Replication Monitor: Publication Node will not expand

Hi,

I'm using SQL Server 2005 Replication Monitor to monitor a number of Publications.

One Publication node, will not expand however, that is to say that when clicked it's label changes to expanding and then never actually completes in order to provide details of the Publications at the Publisher. This means that I cannot highlight a specific Publication at the Publisher for further investigation and instead have to review all Subscriptions in the subscription watch list, which is cumbersome.

I have tried removing the Publication and adding it back to Replication Monitor without success, the issue persists. I have also tried creating a SQL Server Login with SYSDBA rights in order to connect to the remote distributor in order to rule out a permissions issue.

Has anyone else come across this issue before or can perhaps provide further suggestions in order to troubleshoot?