Hi,
Just logged in today and after the software updated, I had the following problems
1) there is no sound (sound OK for other apps)
2) the screen opens about 1 and 1/2 inch too long, so I re-size the window to fit. Perhaps the software does not know this, as the puzzle it not centered so the image is off the bottom of the screen. I can rotate and re-size it, but cannot move it up to center it.
Thanks

P.S. Using Lubuntu 16.04. Fairly new install, so mostly have the default install stuff.
Sound has been disabled in the game due to a problem it was causing.
Right-click-drag (or Ctrl-click-drag) on the background lets you slide the protein around on the screen. The Q key centers the protein. Here is a list of keyboard and mouse shortcuts from the wiki: http://foldit.wikia.com/wiki/Shortcut_Keys Many of them are also listed under Help in the game.
Thank you for replying. I'm OK w/o the sound, just thought I'd mention it in case.
I'll try the Q key and the link you suggested.
dw