How about displaying a banner on top, that the reputation was recalculated?
The status message about StackOverflow reputation change in meta
Reputation scoring has been revised and recalculated on all Stack Overflow family sites. Learn more about this change.
would be really useful if it is SO also... I searched my profile
30 min to what made this change... Then when i browsed meta i found this... If the above status message is present in SO it would have been easier for me and other users...