[osiutino]

They should force users to retype their password for logging out

[liormarga]

The thing is that even if you are logged out like most of the people every thing is saved in the default profile so when you logging in to chrome you just take all the passwords , think about college computers farm or public computers ....

[ineedasername]

Or a simple bit of malware that automates the process so the thief doesn't even need to be physically present!