Google has released chrome 6.
Two years ago we all tested the first public beta of chrome 0.2

On homepage Google Chrome "Happy 2nd birthday, Google Chrome!"

http://www.google.com/chrome?brand=CHMP

Version number *6.0.472.53* includes several security fixes and rewards:

"....
# [45659] High Stale pointer with SVG filters. Credit to Tavis Ormandy of the Google Security Team.
# [$1337] [51630] [51739] High Integer errors in WebSockets. Credit to Keith Campbell and Google Chrome Security Team (Cris Neckar).
...."

http://googlechromereleases.blogspot.com/2010/09/stable-and-beta-channel-updates.html

Also
http://secunia.com/advisories/41242/