HowtoMatrix

This is just a short “quick fix” post.
For those who need it, here’s a quick fix when you get an error message like this:
“W: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/f/ffmpeg/libpostproc1d_0.cvs20070307-5ubuntu7.2_amd64.deb Size mismatch”
It’s an error I received when the auto update feature was working in Ubuntu Linux. I double checked my sources.list file, but it was okay.

Read more at Ubuntu Linux Help