Regexp route broken in Rails 2.2.2?

Hi, just upgraded an app from Rails 2.1.0 to 2.2.2 and finding my routes stopped working

URL which doesn't match is: http://blah/blog/auth/login

Route is: map.connect 'blog/:controller/:action/:id', :requirements => {:controller => /(auth|asdf)/}

In fact, neither does this match: map.connect 'blog/:controller/:action/:id', :requirements => {:controller => /(auth)/}

But this does: map.connect 'blog/:controller/:action/:id', :requirements => {:controller => /auth/}

So the problem seems to be that "( )" syntax is breaking the regexp parsing. Curiously though the regexp *does* work for link generation, it's only route recognition which breaks

Can anyone give me a quick workaround for this, quite a lot or routes to alter otherwise...

Thanks

Ed W