Mkay so I went to http://userscripts.org/scripts/show/114002
Then I downloaded "Firefox Beta"
Ma youtube center is naow 1.34.0 and videos are working nicely.
2-4 weeks while I was in army. I do have unlimited data on my phone, but I had some REAL nokia phone while I was in the woods. I could not have some high end smartphone since they can't really take all that hot/cold and combat training.
There was some security update for firefox this morning and I installed it. After that youtube videos didn't work at all (black boxes). Only disabling youtube center makes videos work again, but now I can't pre-buffer videos again........