Bit of a long shot this but there's nothing I can find on the Ruby 
forums so I'm guessing it's a Linux distro thing.
Anyone else just upgraded to Debian Lenny (stable), and updated their 
Ruby gems (via gem not aptitude), only to find Ruby on Rails has broken 
slightly?  The flash messages are now completely persistent, and don't 
delete themselves after being viewed.  I'm using database backed cookies 
in the standard rails way.
Simon
Ruby version              1.8.7 (x86_64-linux)
RubyGems version          1.3.3
Rack version              1.0 bundled
Rails version             2.3.2
Active Record version     2.3.2
Action Pack version       2.3.2
Active Resource version   2.3.2
Action Mailer version     2.3.2
Active Support version    2.3.2
Application root          xxxxxx
Environment               development
Database adapter          mysql
Database schema version   xxxxxx