Minecraft world flickering

I can't test it right now (At work) but I believe Minecraft stores its configuration data (and world data) in "$HOME/.minecraft".

If you replace that directory with a symlink to a folder in the Ubuntu One folder it should use that new folder to store it's data, if you do the same at a different computer the game shouldn't know the difference.

I was finally able to determine with the help of some of my forum friends that Minecraft's source code has been updated so as to not allow it from being played in an applet to prevent some inconspicuous bug whereby people who hadn't payed for the game were able to play it in an applet. This fortunately reinvigorated my efforts to determine what was wrong with playing the regular launcher. I was eventually told by the IRC chat for Minecraft that it was my ESET NOD32 antivirus which was causing the problem, and that I was forced to uninstall it in order to play Minecraft and install a different antivirus. I have elaborated on this in the comment I made below, but my problem is unfortunately not yet resolved. Here is where I posted the bug on the official Mojira bug posting site. https://mojang.atlassian.net/browse/MCL-887 However as the original problem has been solved I'll simply leave this as the answer.