I'm running 10.7.5 and I have noticed a problem with associations between files and applications. The main symptom is that Finder shows more than one copy of the same application to open a file.
At first everything worked, but now the
com.apple.LaunchServices.plist file is not updated anymore. In particular, if I launch through terminal
lsregister -dump the association appears, but if I open the plist file the association is not present. If I reboot, instead of updating the plist file, the system eliminates the association from the database (the option
-dump doesn't show it anymore). I tried to launch
lsregister -kill -seed several times, but the situation doesn't change.
How can I permanently fix the associations between files and applications?