Great features, works with FireFox - only complaint: scrolling is still sloooow and cho o oo pp y... this really sucks... if this could be fixed it would be 5 stars +

I have to offset "normbs" 1/2 star rating a little. I have to admit I never looked in the manual. To "sync", just press on "New", choose Sync and choose a Wuala and a Local Folder to sync.
I agree that Dropbox is easier to use, but Data is only encrypted on Dropbox Servers and Dropbox has the key, so they can decrypt it if they like. Wuala encrypts on the client, and Wuala has no key - so it's a lot safer. Wuala claims they could not decrypt, well, there is no proof this is true but it should be safer than Dropbox. Their servers are in switzerland and france, so they are not under the us "patriot act", which is important especially in europa, because basically it is illegal to put any privat data from other people (clients, friends...) on a server where the US government could spy at if they like in most european countries.
Also, you can sync any folder you like at any location, not only a Dropbox folder. Besides Syncing, Wuala also offers the possibility to backup folders. And then, many LaCie Harddiscs offer promotion codes which give you free extra storage.
So all in all, I think it's worth to look at, even if I have to agree that the interface could be improved and dropbox is a lot simpler.

Still slows down Safari a lot, page loading hangs/stalls for seconds. After opening some pages, Safari uses about twice the memory than without AdBlock, often well above 1 Gig. I dont know if it s AdBlocks fault or the fault of Safaris Plugin API, but something seems to be terribly wrong with Safaris Memory Management when using AdBlock, which probably is also one main root of the performance issues.

I returned to 9.4.x because of the horrible new, non standard printer settings. No reliable way to print duplex. Sometimes the second page is printed empty, then simply no duplex at all, adobes settings and the system wide settings simply seem to fight each other... - the new print dialogue works fine in the windows version, but is a mess on mac osx. feels like they just used windows code and abandoned any effort of porting it halfways in the process.