Armande - 10:13 am on Jul 27, 2006 (gmt 0) [edited by: Armande at 10:15 am (utc) on July 27, 2006]
From my pov it's a coincidence.
I didn't sign up for google sitemaps until AFTER I noticed that my rankings had dropped. I had not bothered with it before so in my case there is no reason to be alarmed about that.
I still am not sure what the use of sitemaps is btw.
[edited by: Armande at 10:15 am (utc) on July 27, 2006]