R help - Apr 2014 - 127.0.0.1:22381/doc/html/index.html hep.start won't start

Dear All,

Sorry to bother you. I narrowed my problem to the function

help.start() which causes the freezing of R by

mill endlessly after M-x R waiting for

127.0.0.1:22381/doc/html/index.html

to load.

I am using Aquamacs 3.0a (GNU Emacs 24.3.50.2)with R3.0.3, newly 
installed: sessionInfo()
-----------
R version 3.0.3 (2014-03-06)
Platform: x86_64-apple-darwin10.8.0 (64-bit)

locale:
[1] C

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

loaded via a namespace (and not attached):
[1] compiler_3.0.3 tools_3.0.3
---------

The FIREWALL is responsible, deactivating will allow help.start()? Bur I 
don't want to work without the firewall!!
Settingthe firewall for  Firefox and Aquamacs to "allow incoming 
connections" (translated from German)will also not help.

Thanks for considering.

Christian