Installing Jetpack v1.2.3 on two (2) new WordPress sites this afternoon. Installation goes fine. Created two new wordpress.com sites and activated them.
When I "Connect" to activate Jetpack, the WP Admin screen goes totally blank!
Furthermore, I also CANNOT login to Admin. I can get to /wp-admin/ and /wp-login.php screens; but, after pressing [Login], the whole browser window goes blank. NO, there is nothing loading for which I should wait.
Of course, after deleting plugins/jetpack/ via FTP, I CAN login without incident; but, WITHOUT Jetpack.
I have installed Jetpack via WP and deleted via WP without activation - NO change in behavior.
I have installed Jetpack v1.2.2 from another site - SAME problem.
BOTH of these sites reside on the same server; so, this could be a host issue - but, WHAT?
Please, advise. Thank you.