NW CIFS, Files with multiple dots in name will not display when doing a "dir *.<extension>" in a DOS box.

Steps To Duplicate:
Create a directory containing files with multiple dots in the name.

Example:
sys:\test\testfile1.tar.gz
sys:\test\testfile2.tar.gz
sys:\test\testfile3.tar.gz
sys:\test\testfile1.txt
sys:\test\testfile1.gz

In a DOS box map a drive to that directory:
net use * \\<ipaddress>\<sharename> /user:<username>
- Where <ipaddress> is replaced with the IP address of the server
- Where <share> is replaced with the name of the CIFS share.  In this case test.
- Where <username> is replaced with the name of the user you want to log in with
- supply the password when prompted and hit enter.

A drive will be mapped to the highest available letter.  Lets use z:
In the DOS box type z:<enter>
dir *.* <enter>
all files are displayed

dir *.gz <enter>
no files are displayed

Double click My Computer
Double click z:
Double click test
All files are displayed

This has been reported to engineering.