How to reactive Gmail "Last account activity"?

[MSL6600]

Today I log in one of my Gmail account & I found one of my Gmail account activity is disable by some one. may be some one hack my account. I will change my password & I also want to reactive "Last account activity" option on Gmail. But I could not find any option to reactive it. Can any one tell me how can I reactive the option?

Sorry for my bad English. & also sorry If i post in wrong section.

MSL6600 Reviewed by MSL6600 on 27th Jul 2011. How to reactive Gmail "Last account activity"? Today I log in one of my Gmail account & I found one of my Gmail account activity is disable by some one. may be some one hack my account. I will change my password & I also want to reactive "Last account activity" option on Gmail. But I could not find any option to reactive it. Can any one tell me how can I reactive the option? Sorry for my bad English. & also sorry If i post in wrong section. Rating: 5

[MSL6600]

Ok. Now I log in again again in my gmail account . & I found It appears again automatically. But It's shows only last 2 account activity not the last 10 account activity. Only my last 2 logs. where are the others 8 logs details? I am really confused . Is my account really hacked?