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Kill that damned "urlclassifier3.sqlite" problem once and for all

Turn off (uncheck) "Block reported attack sites" and "Block reported web forgeries" in Firefox/Icecat security preferences. Unless you're an idiot, or running Windows, then you probably don't need this.

Then quit Firefox/Icecat, and:

cd "$HOME"
find . -name urlclassifier3.sqlite -exec rm -f {} ';' -exec touch {} ';'
su -c "find . -name urlclassifier3.sqlite -exec chattr +i {} ';'"

"chattr +i" means "change the file attributes to immutable", meaning "can't change or delete".

This will now ensure urlclassifier3.sqlite remains a zero byte file forever.

Apparently, that melodramatic proclaimer of outrageously twisted opinion, Linus Torvalds, thinks anyone who criticises Microsoft for their unethical (and even criminal) behaviour, is suffering some kind of "disease" (although he fails to specify). I, however, will specify the disease that fuels Torvalds' hatred of Microsoft critics ... it's called "pragmatism".

A couple of days ago I started getting these errors whenever I ran anything that scanned for logical volumes (Linux LVM2):

Buffer I/O error on device dm-6, logical block 0
Buffer I/O error on device dm-7, logical block 0
Buffer I/O error on device dm-8, logical block 0
Buffer I/O error on device dm-9, logical block 0

My first reaction was panic, as I initially believed my HDD was failing, but after some investigation I realised that the above devices simply didn't exist.