firefox and seamonkey don't always use nswrapper

[Joep L. Blom]

HI,
I just started using ubuntu (after 6 years of Fedora) so I'm still not 
familiar with the peculiarities of Ubuntu, so I have many questions. The 
first I have applies to the upgrade policy. I have a problem with 
nspluginwrapper.
On the (nspluginwrapper)-site it says the version 1.0.0 is available but 
Ubuntu only has 0.9.91.6. As my firefox (2.0.1) - and seamonkey (1.1.9) 
  - both act with certain sites as if the wrapper isn't loaded and I 
have read on the site of nspluginwrapper that the new version should 
resolve certain problems I wonder what the reason for the ubuntu 
packagers is not to upgrade.
I don't want to compile it myself as I'm unfamiliar with the .deb 
related package database and I don't know how a selfcompiled program is 
- or can be - stored in that database.
Sorry for the rather long question, hope somebody can help me out.
Thanks in advance,
Joep