I never noticed that Carbonite was a resource hog until I got Mavericks. But now, it routinely -- and without apparent cause -- times out so that if I run my mouse over the icon on the tray, I get the beachball. Forever. Same if I open Carbonite in Preferences, where it apparently disables itself and refuses to allow me to change it back. I've spent more hours on the phone with Carbonite Support -- usually Tier 2, but lately, Tier 3 -- who end up, after literally HOURS on the phone, uninstalling and reinstalling Carbonite. I am far too old to waste precious hours talking to kids who remotely explore my machine and whose backup prescription is to uninstall their program. It is CONSTANTLY my top CPU process, above 60% most of the time. At this moment, it's at 65% and the next most intensive program being Bean at 10%. Can someone here please, please give me an idea of what I should do about this? Mozy sucked very badly for me, and I don't know what else to try. I am on a 20-inch 2008 iMac with 2.4 GHz Intel Core 2 Duo on Version 10.9.2 and 4GB SDRAM. Thank anyone for any crumbs you can throw my way.