hmm the current PAM reads the following:
Only 32-bit browsers are supported, except for Safari on OS X, which is only available as a 64-bit browser. In the case of IE10 and IE11, this means “Enhanced Protected Mode” (64-bit content processes) is not supported; the IE 10 application itself (the “Manager” process) is always 64-bit on 64-bit systems and this is supported.
