Something weird happened

[Beorning]

I turned my PC on today and, after starting up Firefox, I noticed that all of the webpages I frequent look different.

Specifically, it's about fonts and image sizes. Out of the sudden, every image is being displayed as somewhat bigger than, say, yesterday. The same goes for fonts. I can change that by zooming out - but then, the fonts are a bit too small for me to read. I tried increasing the fonts' size - but when I turn the "Change Font Size Only" option, Firefox automatically zooms in and everything is big again...

And it's not the only time something like that happened. I've noticed that FF messed up with font / images sizes on its own periodically... It's so annoying!  >:(

Anyone knows explanation for this?

[Elina]

Try hitting ctrl and 0