Mint 13 64 Bits very slow after login

[Bali]

Hi,

I just installed Mint 13 LTS on a Dual core with 4 Go or Memory.

Afetr login, my desktop icons and the systray took around one minute to totally appear.
I realised that a Python process takes around 70% of the two CPU: looks like Mint update. I removced mint update from the startup software, nothing changed: I still have this python process.

Any idea how to solve this?

Please see the joined screenshot:



Thanks in advance

Bali