I have 'Market' and every time I attempt to log into it using my Google account it says that it 'Can't establish a reliable data connection to the server.'
Any idea what could be done to get it working?
Setting the correct System date and time.
It turns out authentication requires establishing a secure connection with Google’s server. The SSL certificate contains a expiration date which would be compared against the system date of the Android system. If the system date is too far in the past or in the future, the validation would be failed, thus the connection cannot be established. This is a security measures of the HTTPS connection, so check your system date next time encountering such strange error message.
If that above fix is not working for you then you can try out ‘YouTube Connection Trick’ to rectify this problem.
This solution will work out if the above doesn’t works.
In what country is your ISP? Here in the Phil, its the same problem because of the unreliable network. My workaround is to use some VPN services to remedy frequent disconnects.
I currently use DroidVPN, free version limited to 100mb a day. Try it and comment on the result.