What you're likely running into is that the Win2k,NT logon has MPPP turned on -- and as the 2nd login comes in, it's trying to bond it to the first. I don't know that we ever figured out how to turn this off on the Win2k/NT machine, just identify the situation and get people moved to different logons for Win2k/NT. That drove us nuts on a particular account for a good 2 weeks until we started doing a 'monitor ppp' and had MPPP negotiations going on for the 2nd session. If on another TCS1000 unit, not doing MPPP across chassis, well, no problemo. The Win2k/NT'r can sit and wait for that 2nd session (with the same username that is) all it likes. Some o' the smarter folks here on this list can probably indicate a way of making sure MPPP is shut off either--or both at the Win side or the TCS side- for the session. Radius attribute? SMT Scott Trautman President/Owner www.gdinet.com Global Dialog Internet 608-240-4638,7fax 2049 Skaalen Road Stoughton WI 53589