Dropbox is one of best data sharing tool available right now. Lots of organizations are using it to share data across different machines and different platforms. But for this you should be ready to keep your data over the dropbox servers, which is not really acceptable in a lot of organizations and with lot of people. For that you need to have something on your servers, which you can monitor and control on your own. For that there are few open source solution are available but out of those, OwnCloud is something which I find most matured one available.
Linus torvalds has finally released Kernel 3.4.
"Sure, I always wish for the -rc's to calm down more quickly than they ever seem to do, but I think on the whole we didn't have any big disruptive events, which is just how I like it. Let's hope the 3.5 merge window is a calm one too," he wrote in his announcement.
The new Kernel includes substantial updates to the BTRFS file system and new support for graphics hardware from Nvidia, Intel and AMD, including AMD's Trinity and Radeon HD 7000-series, NVIDIA's Kepler stack. The release also includes the Yama security module, support for the x32 ABI, asymmetric multiprocessing support, the dm-verity device mapper target, and more.