In asp.net (using MVC, but this happens in regular too)
Profile.GetProfile(username);
will update the LastActivityDate for that user. This is not intended when someone else is viewing that user's profile.
In the membership class you can specify whether to update this date with a second param, like so:
Membership.GetUser(username, false); // doesn't update LastActivityDate
Membership.GetUser(username, true); // updates LastActivityDate
Is there anyway to do something similar in the Profile provider without writing my own provider?