Delete Google Chrome and re-download it.
Otherwise, try Opera.
It's simmiliar to Chrome and its interface is quite good.
I had that problem once, just enable cookies in chrome or fire fox or whatever or just click the save password thing so that every time you get logged out, just click sign in and automatically it signs in for you. I think the problem is because like whenever someone logs out, the whole network has to relogin for security reasons...