TAC has indicated that this is a bug.http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCte33025

I'm bumping this because I have the exact same question and symptom.If the Controller is recording a history, why can't this be displayed?

You might want to consider adding a specific web access tracking product like Websense. It can filter and block sites by category and log access. It is compatible with ASA.This will save you a lot of log file diving. There are enough inappropriate...