I wrote:
I am not sure if this is related to bad packets, a bad pptp patch,
poor kernal .. I am at a loss.
[snip]
Check your logs, do debugging of the more likely suspect, pptpd.
Or, on further thought, the MPPE kernel patch you used is equally
suspect. Are the Windows users using MPPE? How about the Linux one?
Please note, this is not an invitation to continue in an offtopic thread
here, I am only trying to be complete in providing something which might
be useful to you. I no longer support pptpd at my sites; we are moving
them to openvpn.
--
mail to this address is discarded unless "/dev/rob0"
or "not-spam" is in Subject: header