One of the major difference that Windows users find while switching to Ubuntu will be the overheating issue. The CPU and Graphic card temperature will almost reach 60 degree celsius even when the laptop is idle. And some users will also find reduced Battery Backup in Ubuntu.
Whatsapp one of the most popular mobile messaging application has launched its desktop version. Best part of this release is that its web based works via Google Chrome Browser, so Linux and Mac users need not wait for compatible version.