I am not able to authenticate using the new 3.9.2 vpn client.
Though the 3.9.0 client on windows xp and the first official edition of the
vista vpn client delivered with bm39sp1 does work, within half a day it is
also not possible to authenticate anymore. The symptom you see is a flashing
'negotiating and authenticating'. after a while the message 'an error was
reported by the IKE application' is shown.
I need to do a stopvpn and startvpn to make it work again. But after a while
same issue.

S2S vpn however is working fine!