SQL Server distribution agent cleanup job causes blocking

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http://serverfault.com – I am using SQL Server transactional replication, and have noticed that on a daily basis all of the publications for a distributor are being blocked when the distribution agent cleanup job executes. I have seen this block persist for up to 2 hours. Some of the subscriptions require extremely low latency, so this is a big problem for me right now. I have read that setting the HistoryVerboseLevel to 0 will stop logging to MSdistribution_history database. Having done this, the blocking subsided for the subscriptions that i changed the distributor profiles for. However, within three days all o (HowTos)