In order to do a clean uninstall:

1. Log into the account where Quicklaunch has been installed.

2.  Export your current settings:

2. Uninstall Quicklaunch from the Windows Control Panel;  "appwiz.cpl"

** If Uninstall fails it is likely that 

    a) Quicklaunch was installed under a different account ( log into that account and uninstall )

    b) Quicklaunch was installed with higher privileges than you currently have. ( add the account to the local administrators group and uninstall )

   c) Finally if nothing else works Delete %localappdata%/Apps/ folder from all accounts that Quicklaunch was installed from.

3. Delete %programdata%/isolatedstorage

4. Delete %programdata%/quicklaunch