I ran into a bit of a bug (two bugs actually?):

• tried to install a debian package using gnome-software
• was (rightfully) asked to authenticate with the dialog shown in the screenshot
• the polkit permissions are wrong (this is bug number 1, probably I can report it to my distro's polkitd package)
• clicking "cancel" did not make the dialog go away
• the dialog blocked most interactions with any other windows (screenshots worked - but that was all)
• killing the process that spawned the dialog (gnome-software) did not make the dialog go away (this is the thing that's annoying me most)

I wasn't able to find out which process was responsible for this, so I also don't know which package to report it for... Ended up killing my entire gnome session to be able to continue.

Does anyone have an idea?

UPDATE: the commenters' verdict is unanimous: this is not a good idea, because it will damage the iron tip of the soldering iron. Thanks everyone!

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These sort of sponges are sold for cleaning the tip of soldering irons:

Now, maybe it's an odd question -- but is there any reason not to use one of these kitchen scrubby things instead?

They are way easier to get, plus they are cheaper.

I'm wondering mainly:

• can you think of a reason why it could be dangerous to use the stainless steel one? (like, poisonous fumes or something)
• would it hurt the soldering iron tip?

Is there a firewall solution for Linux that will notify me of any connections that other processes try to establish, and let me allow/deny each connection manually?

I would like to get more concious about which tools are connecting to the internet, and how often.