[Q] Note 1 - hangs several times a day and slowed down since 4.1.2 upgrade

Hi,

I have recently updated my galaxy note's firmware to 4.1.2. Eversince the upgrade, the phone hangs several times a day and has slowed down drastically.

There is a huge lag even in simple things like typing on whatsapp, clicking a photo, watching a video, playing music files.

I have seen that there are a few others who have experienced similar problem in Note II.

Can someone please suggest me a way to fix this? I am having to restart the phone atleast 6 times everyday.

Thanks
bkgrc