Netware 6.5 SP5
Client 32 4.91 SP3
Windows Xp
Dell Latitude D620 laptop
Broadcom Nic

Login into the server
logout of the server
un-plug the network cable
move to other side of room
re-attach different network wire
cannot re-log into the server until I re-boot

any ideas of why this would be happening ??

Thanks in advance