The Attachment server is not in the domain and has been placed on a segmented network following RIM's documentation.

The Blackberry Controller service will not start due to the netlogon service not starting because of it not being needed for a workgroup configuration.

I had no problems before doing the sp6 MR1 install today.

Any ideas?

4.1.6 BES for Exchange.

I had to change the logon tab of the Controller to "system account". I am now able to start the service without the netlogon dependency. I'm not sure why the MR1 install would've change this though.