I have used various builds on MC 13, including the gold version and the latest beta but I still keep having these problems. One is that MC seems to be using a lot of CPU activity when it first is launched. It only lasts for about 30-45 seconds, but still my CPU activity reaches 100%. Why is that. I have turned off a thumbnaling options; they are not built on startup. I want to get that fixed if possible, as it is very annoying and interrupts video and audio. My second problem, again with all version I mentioned above, is that when I play video it never enters fullscreen mode. That happens with every video every time. The video just stays in "Display Mode" the whole time, as seen below.
P.S. Beasley is adorable!