If u restore via Time Machine does that incompatible software lurking in hidden directories gets restored as well? because after doing a fresh install I would need to restore my stuff....I did a upgrade from Lion to ML and I'm having issues with iCloud sync not working....there is a iCloud process called UBD that is a huge CPU hog and each time I launch iWorks, the new Notes or Game Center application my CPU goes skyrocketing and so do the fans. I have made a thread and so far no one else has experienced it....
Not only is the process called ubd a resource hog it is also creating com.apple.ubiquity.peer-uuid key(s) and certificate(s)...made up to 23000 at one point when I let it run continuously for an hour.....my KeyChain Access window was FULL
I believe it depends what you import, but yes, it does. There are a couple of things I'd recommend before you try to reinstall. So you know, I suspect that ML has bugs that cause problems when connecting with servers. One problem has to do with attempting to write to the server when it shouldn't (I've seen a few problems now with IMAP servers in particular).
First of all, make sure that your computer has finished syncing with the server and that spotlight isn't running (the spotlight process is mds and mdworker - it sounds like they aren't giving you problems). Spotlight no longer indicates when it is indexing, that's why I mention it.
Second: do you have Mail running? If you use Mail, do you have any accounts set to store data locally?
Third: Now this is more to do with fixes. As a test, turn off your firewall, restart your computer, and try connecting to the same services. Does the issue continue?
b) Restart in recovery and reset ACLs (Terminal ->resetpassword). Don't touch the save button, just click on your HD, select your username, and start the repair process. When done, I've found it's better (don't know why) to just quit the password reset application and Terminal and then restart the computer.
b) Delete the ubiquity folder in ~/Library/Application Support, restart, try again.
Fourth: I've just looked through the thread and noticed that your problem is related to local storage of a document. If 3 doesn't work, basically the only fix I've been able to work out is to start from scratch. What you need to do is completely restart your connections with iCloud. By completely restart, I mean remove your account from Mail, Contacts, & Calendars, and iCloud if any persist, and all remaining files associated with it; all preferences, calendars, everything.
To do this you'll need to go through a number of folders in /Library and ~/Library. You can backup these files and folders if you like, but they need to be removed from the 'view' of the system. So, all preference files, Application support files and folders, local folders, Cache folders, etc. These files can all be remade next time you start the apps.
I would also recommend going in to Keychain and making sure that it does not need to be repaired. (Keychain ->Keychain First Aid). If it needs repair, fix it. There probably isn't any harm in removing those ubiquity certificates either.
Restart computer and set up your iCloud account again.
I hope you don't need to get to step 4. If so, I'll try to be more specific about the files etc. to remove. Simply turning off iCloud isn't enough. Basically, you want to set it up as if for the first time.