refugee, just giving you the heads-up that if you have a problem with a program developed and maintained by a project other than Linux Mint, there is not much use submitting a bug to Linux Mint's Launchpad for that. The development team doesn't have the resources to analyse and fix bugs in Firefox, LibreOffice, or Banshee for example. Please submit bug reports for such programs to their respective projects instead

An Internet search will usually quickly find you where you can submit a bug report for a program.
Bugs in Cinnamon and Nemo can be reported on GitHub:
https://github.com/linuxmint. You can also see the list of other Linux Mint developed and maintained programs there.
Usually when you run into some issue and suspect a bug, it is quite helpful to get to the bottom of it with help from others on the forum here. But it is only the developers and maintainers of the program you have the issue with that will fix the source code, so the bug report needs to go to them. In a perfect world Linux Mint would have a team of users forwarding such bugs, and though the community has proposed to do just that a few times, nobody has yet stepped up to actually do it. We're all just volunteers here, also on Launchpad...