Observer don't get preferences change after extension upgrade

[c.m.]

Hi all,

I've an extension for which, when upgraded, the preferences are lost
and the observer doesn't get the changes until restarting FF.

It happen on some FF installations (version 1.5.0.6/7 on WinXP) and
it is non deterministic, other PCs work fine.

The behaviour is the following:

- the user has a working and well configured extension

- the user upgrade the extensions (by opening from FF)

- the user lose the parameters and change them

- the observer inside the extension doesn't get any change

- after a restart, the extension use the changed parameters.

Any idea?

Many Thanks,

c.m.