I understand, from this question, that the AssignedTo search axis only operates on open cases. We have about 900 open cases and 16 of them are assigned to me. When I search on assignedto:me I get the expected results, the 16 cases that are assigned to me. When I search on NOT assignedto:me I would expect it to return a list of the 884 cases that are not assigned to me. However, this is not the case. This search returns a list of 11 cases, all of which are assigned to me.
What's up with that?
Edit: After pondering Adam's response for a minute, I understand my problem. I was assuming that, because "OR" is a boolean operator in FogBugz search, that "AND" and "NOT" were also. That is not the case. The boolean operators in FB search are not AND, OR, and NOT, they are space character (the implied AND), OR, and -. Searching on NOT assignedto:me just returns the cases assigned to me that contain the word "not".