Just added this to update my star rating as well as the review comment: UPDATE: 9 APRIL 2012. The latest version appears to fix the beachball/CPU problem and my machines are back in perfect sync. With two laptops and my wife's machine all my key data is synced and I wouldn't be without SS. Tech support could have been better and the fix faster, but it was intermittent and varied by machine.

I've been using this one as online backup tool. I've got a dropbox account but I don't use it, too limited. I've been using this on Mountain Lion and works flawlessly, the synchronisation is great and I haven't experience none of the CPU problems... perhaps because I just used it as once per week or when I need to backup or synchronise something important, I never used it 24/7, because takes lots of resources as any other online tool, being Dropbox, Pogoplug,etc... it is slow, but that's the price to pay for something free

This is/was perhaps the worst sync and share service I've ever tried. Perhaps that's why they are offering the most free storage vs. many similar services. (And I don't count SkyDrive because of its closed system redirecting every share link back to MSLive before a shared file can be downloaded).

The menu bar module wis indeed a memory hog... a real porker! Each time I relaunched it, it also lost all shares on my system that weren't in the preset default location. I verified this with at least a dozen relaunches in multiple environments, either VMed or on physically different machines. And unlike other services, the need link devices is suspicious.

In two hours of testing with some small web size images, it never finished syncing one of them, even when I went in and shut down all security limitations and gave it carte blanche (and I hate doing that).

The file manager portion of the app doesn't function like an app. Anytime it loses focus, tabbing between open windows never brings it up. I have to minimize all other windows to find it or go back to the menu icon to call it up again.

Unlike DropBox and a few others, SS wasn't even able to keep up with local folder / file changes I made, meaning that even though no files ever synced (and on the web were all listed as pending upload), it couldn't even update the actual folder structure changes I made unless I killed the app, restarted it, relinked all the syncs I lost, and etc.

Manual upload worked adequately, but again was slow. Oh, and by the by, I'm on a fiber optic connection.

Sharing was a pain, and not well integrated into the local app, let alone working even half as well as say DropBox's intergration with internal file managers. (Yes, plural, as I test this on WinXP, Win7, and OSX 10.6.8).

In the time I took to write this review, DropBox synced about 250mb. SugarSync... still nothing. If you plan on using it in the "out of the box" configuration, then maybe you will be okay. Maybe not. But I'll be deinstalling this waste of an hour plus right now.

Ive upgraded my account to 100GB then synced the entered "movie" and "Music" folder with sugarsync. then bad things happened.

the app constantly occupied 200% of my cpu use cause my system extremely slow. Then i cannot open "system preferences" and "activity monitor" because sugarsync ate out all the resources...it kept reminding me "syncing folder changes"

very good service but suck application

I used Dropbox but that program was a bit to hard for me. Tried SugarSync, added 4 custom folders to sync between my iMac and MacBook and it worked immediately. Had some problems with syncing apple folders (music and documents) so I created my own set of folders to sync. Works like a charm. I use iCloud to sync email, iCal, Address book etc. SugarSync to sync files. I am very happy with it.

Just downloading - slow connection - 1.7.7

I hope the ugly bug will have gone: the Contextual Menu of SugarSync (aimed at doing nearly nothing at all) is crashing all Office2004 products when invoking a contextual menu !!!
And after deletion it is reinstalled by the app.
What helps? Opening the SugarSync-CM-package, delete the folder Contents:MacOS. Close.