Use of the org-protocol-store-link bookmarklet [1] sometimes makes Emacs hang (as in Emacs not responding to input), but not always.
It seems to be caused by accumulation of emacsclient processes. Each click of the bookmarklet creates a new emacsclient process which stays, and the number of these processes increases. Workaround for now is for the user to periodically and manually type M-x server-start RET (which restarts server and kills clients). This happens on MS Windows 7. [1] from http://orgmode.org/worg/org-contrib/org-protocol.html
