I use CC.Net quite a lot now with Perforce and ClearCase and I was recently asked to help out a team who were having some problems.
A CI project had been setup on CC.NET and it "seemed" to be running fine.
Someone would checkin the file and the project would detect the changes. Unfortunately the files on the build server were not actually being updated :S
Checking through the logs led me to this error message:
error: Request too large (over 200000); see 'p4 help maxresults'.
This post covers this issue in more detail, suggests a possible fix and describe how this fix can be applied as a CruiseControl.Net Plugin.
John
...