From Fedora Project Wiki

There is an issue involving print dialogs being opened when some sites are visited. After much discussion/testing on this bug:, the problem seems to be with the version being distributed here. Is there a place to submit bugs like this?

Video support

Is there a plan for html5 video? It can not really be a problem with ogg and webm.

Stable vs Unstable Chromium

You should not use Tom Callaway's chromium repo because it installs unstable Chromium 11 that crashes all the time, instead use these instructions to install stable Chromium 10 on Fedora: