Last modified: 2011-04-14 15:13:05 UTC
See, for example, the recent users http://en.wikipedia.org/wiki/User:Blue_Meanie_Glove, http://en.wikipedia.org/wiki/User:Dunewufdn, and http://en.wikipedia.org/wiki/User:Spyware_Protect_2009. They still appear correctly in the user list, with correct timestamp, e.g., http://en.wikipedia.org/w/index.php?title=Special%3AListUsers&username=Blue+Meanie+Glove&group=&limit=1. This has happened a lot recently, though I can't detect a pattern.
Changing component.