Sys.Profile.set_autoSave method in Atlas
If you are using the ASP.NET 2.0 profiles in Atlas, you want to pay attention to the Sys.Profile.set_autoSave(boolean). If you pass a true in, changing any value in a Profile results in the updating of the profile on the server. Setting it to false gives you much more control. Also, if you are seeing the updates being performed on your server multiple times, you might want to look into this. I had some example code that had the udpates being made multiple times. When I set the value to false on a page load, the problem of mutliple calls went away.
Overall, I think that this is very cool. I can see why they have this and I think it is a good idea.
Wally