VPN no longer works after samba upgrade

Hello,

I have a VPN configured and working for some years now. I use Gentoo
linux, and recently Samba has been upgraded from version 3.0.37 to
3.4.9.

After the upgrade the VPN stopped working. The problem is that ver.
3.0.37 is no longer available, so I cannot downgrade.

Can anybody help me to get this working with Samba 3.4(.9)?

Here is a log of the problem:


Oct 16 17:39:02 polvo pptpd[6501]: CTRL: Client 213.8.247.192 control
connection started
Oct 16 17:39:02 polvo pptpd[6501]: CTRL: Starting call (launching pppd,
opening GRE)
Oct 16 17:39:02 polvo pppd[6502]: Plugin winbind.so loaded.
Oct 16 17:39:02 polvo pppd[6502]: WINBIND plugin initialized.
Oct 16 17:39:02 polvo pppd[6502]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so
loaded.
Oct 16 17:39:02 polvo pppd[6502]: pptpd-logwtmp: $Version$
Oct 16 17:39:02 polvo pppd[6502]: pppd 2.4.4 started by root, uid 0
Oct 16 17:39:02 polvo pppd[6502]: using channel 5
Oct 16 17:39:02 polvo pppd[6502]: Using interface ppp0
Oct 16 17:39:02 polvo pppd[6502]: Connect: ppp0 <--> /dev/pts/1
Oct 16 17:39:02 polvo pppd[6502]: sent [LCP ConfReq id=0x1 <asyncmap
0x0> <auth chap MS-v2> <magic 0xd29e844> <pcomp> <accomp>]
Oct 16 17:39:02 polvo pppd[6502]: rcvd [LCP ConfReq id=0x1 <asyncmap
0x0> <magic 0x638e8298> <pcomp> <accomp>]
Oct 16 17:39:02 polvo pppd[6502]: sent [LCP ConfAck id=0x1 <asyncmap
0x0> <magic 0x638e8298> <pcomp> <accomp>]
Oct 16 17:39:02 polvo pppd[6502]: rcvd [LCP ConfAck id=0x1 <asyncmap
0x0> <auth chap MS-v2> <magic 0xd29e844> <pcomp> <accomp>]
Oct 16 17:39:02 polvo pppd[6502]: sent [CHAP Challenge id=0xa1
<506e0fba0a0713de3d9f8041bb8315d4>, name = "pptpd"]
Oct 16 17:39:02 polvo pppd[6502]: rcvd [LCP EchoReq id=0x0
magic=0x638e8298]
Oct 16 17:39:02 polvo pppd[6502]: sent [LCP EchoRep id=0x0
magic=0xd29e844]
Oct 16 17:39:02 polvo pppd[6502]: rcvd [CHAP Response id=0xa1
<c2c8956306ec6af38af7a75aed8a78940000000000000000cc2bf769f3915008b2fd3847be6a363e2734b9923bd81df000>, name = "caguiar"]
Oct 16 17:39:02 polvo pppd[6502]: sent [CHAP Success id=0xa1
"S=8C46656F3ADB3622486AC968F2863EDE524E596F M=Access granted"]
Oct 16 17:39:02 polvo pppd[6502]: sent [CCP ConfReq id=0x1 <mppe +H -M
+S -L -D -C>]
Oct 16 17:39:02 polvo pppd[6502]: rcvd [LCP TermReq id=0x2 "Failed to
authenticate ourselves to peer"]
Oct 16 17:39:02 polvo pppd[6502]: LCP terminated by peer (Failed to
authenticate ourselves to peer)
Oct 16 17:39:02 polvo pppd[6502]: sent [LCP TermAck id=0x2]
Oct 16 17:39:02 polvo pptpd[6501]: CTRL: EOF or bad error reading ctrl
packet length.
Oct 16 17:39:02 polvo pptpd[6501]: CTRL: couldn't read packet header
(exit)
Oct 16 17:39:02 polvo pptpd[6501]: CTRL: CTRL read failed
Oct 16 17:39:02 polvo pptpd[6501]: CTRL: Reaping child PPP[6502]
Oct 16 17:39:02 polvo pppd[6502]: Modem hangup
Oct 16 17:39:02 polvo pppd[6502]: Connection terminated.
Oct 16 17:39:02 polvo pppd[6502]: Connect time 0.0 minutes.
Oct 16 17:39:02 polvo pppd[6502]: Sent 10 bytes, received 0 bytes.
Oct 16 17:39:02 polvo pppd[6502]: Exit.
Oct 16 17:39:02 polvo pptpd[6501]: CTRL: Client 213.8.247.192 control
connection finished



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