acroread plugin not working

[Tobias Heinemann]

 > Removing acroread installed to /usr/local and installing ubuntu
 > packages (acroread, mozilla-acroread) did not fix the problem.
 > nppdf.so are of course identical in ubuntu .deb and Adobe's package.

Are there *any* plugins listed under about:plugins ?

 > I can reinstall the system from scratch, but it would be rally useful
 > to find out what causes this problem. No luck so far.

Try "mv ~/.mozilla ~/.mozilla_backup" and restart firefox, maybe that 
helps...

Regards,
Tobi