I appears that right on schedual Google has released their latest toolbar update. Thye typically release this every quarter, and they really waited until the last possible day to release this update as the last one was done on January 1st 2009.
I hope everyone gets what they wanted to Christmas this year 
Tags: 4/1/2009 PR update, April 1st 2009 PR update, google page rank update, google PR update, google toolbar update