After the upgrade to Intrepid the web developer Firefox add-on didn’t show it’s toolbar anymore.
To my surprise I could not find the toolbar of the web developer add-on anymore when I wanted to debug a site. Some experimenting with disabling add-ons didn’t indicate which combination of add-ons resulted in the problem.
Next attempt: use a new profile, install Web Developer and then add the other extensions one by one. This lead me to believe the Tab Mix Plus add-on was the one to blame. However, I really, really like that extension!
Using Google once again, I finally stumbled upon
Bug #281348 which revealed
the real problem: the Ubuntu Firefox Modifications add-on (from the
ubufox package). Disabling this add-on didn’t immediately result in
the return of the toolbar though. I had to remove the “localstore.rdf”
file from my profile (located in
in my case) and restart Firefox as well. Another solution may be to
use a package for Intrepid which contains the fix (see
this comment on the bug report).