I am using the latest viewer on the Mac at home on mt DSL. I get this issue as well. Instead of buttons and the feed, I get what looks like HTAML 1.0 links, but no buttons, and the profile/feed is essentially useless. At school/work, where the connections are faster and I have much more RAM, it works as advertised. Issue must be the way the UI uses memory allocation or something. There may be a way yo tweak it in preferences or the developer/advanced settings, but so far I cannot figure it out. Kinda sux, becuase I do sort of get how the feed thing could work for me.