I have great news !
The first one, "dropbox" seems now accepting to post scores on Playtomic servers with the "funstorm" unofficial Playtomic C2 plugin !!! yes it works with Chrome 18 and firefox 12 ... but don't works at all with IE9 ...
The second good news, i work on the fps problem which was link to a huge size canvas i use for shadows rendering. With one canvas per puzzle piece the result is really impressive ... actually with 12 canvas objects finished on 24 needed ... i have [NO] fps drop !!! ...
On Chrome 18, the game is fullscreen at 55/60 fps from the start to the end and i notice no bugs.
On Firefox 12, the game runs fullscreen at 25/30 fps ... (it's not really fast) ... i notice a little font problem ("italic" lost) but nothing really serious so Firefox can be used if you dont want to use Chrome.
IE9, same fps as Chrome (55/60 - excellent) and very good display quality ... but just one looping sound in background and VERY serious priority management bugs (some events are not launched !) ... also leaderboard don't work too ... ok avoid !!!)
I work very hard on the next game version with better shadows and i think no fps drop ... i also improve the leaderboard system.
If i have no problems the next version (0.13a) will be uploaded on dropbox in a few hours ...