microblogposter caused my browser to go blank after posting/updating a new post. I have a WPML Multisite running WordPress 3.9.1.
After Network Deactivating the plugin, web page appear fine after updating.
First I thought this post had 9 images (largest one is 310k 575x1023) which might caused the blank page, but even a test page still goes blank after posting. So the plugin or along with my other settings caused the problem.
Posting a new page is fine. So there is just some problem with posting/updating a post.