As has already been suggested I would try uninstalling Eset and see if the youtube problem still persists. Also check you have the latest Flash Player installed. What issue are you having with youtube?
Then depending on your findings either renew Eset (downloading latest version from their website), or if you really want to change and prefer having the paid for support/peace of mind look at Kaspersky AV 2013. I use Eset in my work place and Kaspersky at home and wouldn't have an issue recommending either.
http://www.neowin.ne...n-screen-crash/ this is the issues im having with youtube and page 2 is where i got the idea that ESET might be causing it.