After upgrade to 4.10 dsl not working anymore

[Sven Hohage]

I've upgraded 4.10 prerelease this morning to 4.10.
Everything went smooth but unfortunately ppp dialup isn't working anymore.
I've looked in ppp.log and it connects but immediately is disconnected.
It states connected ...opening -> dial....dial-> carrier...Disconnected

I've read in another mail that it could be a bug. So I tried the advice 
and entered a different date-tag in my supfile to recompile all but the 
only possibility to go from Freebsd online is the XP  box as ics...
In this setting I  can't update the source because cvsup complaints to 
being not able to get the ip-adress..