Since your on 2008, one option you might want to look at is setting up a server side trace and just limit it to SQL:BatchCompleted and filter the TextData column on SET IDENT% and DBCC CHECKIDENT%. Capture columns like TextData, application, session, user/login columns, start time and whatever else. With the frequency you've seen, it wouldn't have much, if any, of an impact and you could probably figure out who or what is causing this.

Sue