I did not see this posted but if it already is please let me know. It seems that when Mumblr is added to a mobile page and the "read more" option is set to lightbox, when it is opened from the phone you cannot scroll the lightbox. The easiest fix is simply to remove the lightbox from the mobile links and send the visitor to the Tumblr post. Just wanted let you guys know about this. Thank you! And Merry Christmas!