A guy named Dave sent me an email today, telling me that my RSA implementation was rather insecure due to the use of the "pickle" Python module. Fortunately I had some nice improvements by Barry Mead already in version control, eagerly waiting to be released. Well, Dave gave me a nice insentive to round up Barry's improvements and send version 2.0 into the world.
Please note that it's a backward-incompatible change. The RSA page shows how you can re-encrypt your data to be compatible (and more secure!) again.