I logged-in in gmail account on my Backflip and now I want to log off but I am not seeing any option of "sign out" on screen.

Pls help me out and let me know how to log out from gmail account.

here's the answer ....

1) Disable background sync

2) Go to Manage Application and clear all data from gmail

I am curious why you would want to log out of your account? The gmail and google account in general is tightly interconnected with the android os (market, youtube etc.)

Actually I recently purchased backflip and one of my friend logged-in in gmail to check his mails but when he tried to log out he was unable to do so.

I see. If someone asks me to check their email, I let them do it through the browser, leaving all my google accounts intact.

Yes you're right ...

but now i'm in another problem .. after managing to log out from gmail account .. Now when I tried again to login with gmail account I always get an error .. "Can't establish reliable connection to server...."

How to get out of this problem .. pls help

I would try logging in through the youtube account (that worked for some). Otherwise, you may need to perform a factory data reset

You mean login to youtube through browser??

Factory data reset will delete all data from my phone and its not 100% that it will work . so I'm not counting this .. this could be last option for me ...

Also i googled this around and found that this is problem is in many android phones and suggestion was to gain root access and delete /data/data/..../settings.db but to gain root access I need to install ConnectMot on my phone which is again not possible as while trying to install I need to go to market and again it will ask for gmail account login which I cant so i coming back to square one ..

what to do ???

I meant open youtube app and log into your account through that app. See if that works

Sent from my Motorola ATRIX™ 4G on AT&T

I tried that too but when I'm trying to login with my gmail account I'm getting the error given below;

"Can't establish reliable connection to data server................"