AdSense Frontend Report was created/deleted

What do these change history entires mean?

[Kobayashi]

I was checking out the change history tool and noticed when the All box is checked there are lots (sometimes 10 per hour) of the following messages in seemingly random order that show up as made by my username but I have run no reports and have none scheduled to run. Looks like they started appearing on 1/28/08. Does anyone know what these are and why they show up?

AdSense Frontend Report was created
AdSense Frontend Report was deleted

[edited by: Kobayashi at 5:46 am (utc) on May 10, 2008]

[Kobayashi]

Well it looks like they are coming from an AdSense account of mine that has the same login as my AdWords account. In the AdSense Reports > Report Manager > Recently Generated Reports there are a bunch of reports named "one-time report" whos times conincide with the entries in my AdWords change history report. Don't see anyway to disable them.