Well, since I cannot replicate the issue and don't have Slimjet installed, we're safe to assume that Slimjet is the cause.
I downloaded, extracted, and looked around at it.
You should be aware that, for some reason, Slimjet contains its own version of xdg-settings and xdg-mime. I don't know why--it is very odd--and I don't want to go through 1,188 lines of code to find out. So I think that's the source of the issue right there.
Still, you can try the following:
To try to force Slimjet to open weblinks:Hit F12 on your keyboard to call a terminal and run
Code:
xfg-settings set default-web-browser slimjet.desktop
If that does not work, try
Code:
xfg-settings set default-web-browser /usr/share/applications/slimjet.desktop
To get the browser to use a separate profile and not piggyback on the Chromium/Chrome one, as Damion said it appears to be doing:1. Run the following line in a terminal
Code:
mkdir -p "$HOME/.config/slimjet-custom"
2. Go the shortcut you use to open Slimjet and in the properties add a switch after the executable name like this
Code:
flashpeak-slimjet --user-data-dir=$HOME/.config/slimjet-custom
If that doesn't work, change $HOME to your actual username, the name of your home directory. I've not tested it with Slimjet but if it works like Chromium here, this should create a new, fresh profile from scratch in the custom location and use the new default configs.
BTW, from a quick look, it appears that Slimjet offers nothing other than standard Chromium with Adblock and other extensions added. It has dozens of compiled java script files that no one can simply open and read to find out what they do, which, for what it's worth, would be a red flag for me about using it unless I knew the developer well. You might consider purging Slimjet and customizing Chromium with extensions to do essentially the same thing. Chromium does not have Chrome's "call home to Google" feature.