Self duplicating mapped drive letters for one user only

windows 2008 R2 server, win 7 and win 8.1 wkstations.

For one domain admin user only, when he logs in he sees normal mapped drives. The longer he's working, he starts seeing more and more letters mapped to the same particular network share. So after a few hours he'll have 12 drive letters all mapped to the same network share.

Doesn't matter what workstation. Doesn't seem to be a particular application.

http://www.eightforums.com/network-sharing/26581-network-posting-tips.html

Also it's helpful to fill in System Specs

ran the batch file in the network tips. Here's the screenshot of the windows 8 machine on which the batch file was run;

Microsoft Windows [Version 6.3.9600]
(c) 2013 Microsoft Corporation. All rights reserved.


C:\Users\len>ipconfig /all


Windows IP Configuration


Host Name . . . . . . . . . . . . : chodo
Primary Dns Suffix . . . . . . . : flatbush.localnet
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : flatbush.localnet


Ethernet adapter Ethernet 2:


Connection-specific DNS Suffix . : flatbush.localnet
Description . . . . . . . . . . . : Broadcom NetXtreme Gigabit Ethernet
Physical Address. . . . . . . . . : BC-30-5B-D2-20-E7
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::1c63:b807:5e15:8932%5(Preferred)
IPv4 Address. . . . . . . . . . . : 172.16.200.111(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Sunday, March 16, 2014 8:56:02 AM
Lease Expires . . . . . . . . . . : Monday, March 24, 2014 8:56:18 AM
Default Gateway . . . . . . . . . : 172.16.200.1
DHCP Server . . . . . . . . . . . : 172.16.200.32
DHCPv6 IAID . . . . . . . . . . . : 96219227
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1A-AB-37-24-BC-30-5B-D2-20-E7


DNS Servers . . . . . . . . . . . : 172.16.200.32
NetBIOS over Tcpip. . . . . . . . : Enabled


Tunnel adapter isatap.flatbush.localnet:


Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : flatbush.localnet
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes


C:\Users\len>^A