Well, with those other programs, they would want to make themselves the default magnet handler but that's not necessarily an issue (I don't think.) Redownld LW & install again (try the "offline" version) as it will uninstall the other version at the beginning of installation.

I think Morhpeus installs other junk, & depending on which BearShare you installed, it can also ... adware, etc. BS Lite is safe.