Branch Tag not a branch tag

Ahoj!

I have this problem of several directories checked out with sticky type
T (branch) and other dirs as type N (regular tag), although I am sure
that the tag I checked-out from was never placed as a branch, but always
as a tag... 
Moreover, I've asked one of my colleagues to check out using the same
command line and types 'T'/'N' appear in different directories than on
my working copy. I'm using:
Client: Concurrent Versions System (CVSNT) 2.5.03 (Scorpio) Build 2382
(client/server) from WinCVS 2.1.1.1
Server: CVSNT 2.5.03 (Scorpio) Build 2382

What am I missing?

Thanks,
Cristian.

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