VPN not working after 10.6.5 update

Last night I updated a Mac OS X Server to 10.6.5, I was connected remotely via a PPTP VPN (running on the server), and could not reconnect after the update, it wouldn’t authenticate.. I drove in there this morning to check it out, the server was running fine, except the VPN. Looking through the logs didn’t tell me a great deal, but for some reason I thought I’d try turning off “Allow 40-bit encryption keys in addition to 128-bit”.. Bingo! It worked fine after this : )