Our Win7 machines seem to have slow performance issue on our Samba server. There is always some delay when launch any MS office files from the share. Also the file transfer rate is significantly slower than from Windows server. However, these problem do not exist on our XP machines. So this appear to be that there are some networking settings in Win7 that was causing the problem. The things that I did so far were disabling IPV6, adding the TCPackFrequency\TCPDelAckTicks reg.key and modifying the NTLM authentication settings in the local group policy, however, none of these can make any difference. Can someone advice what could the problem?