I have run across this problem on Power7 with AIX clients and specifically with 
TSM 6.3.  I'm not sure what version of TSM you are running, or what platform 
you are experiencing the problem on, but if your platform is AIX, check this 
out.

https://www-304.ibm.com/support/entdocview.wss?uid=swg1IC80341


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Ehresman,David E.
Sent: Wednesday, July 31, 2013 1:43 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Long pause for password prompt

One customer is reporting a fairly consistent 30 second or so wait after 
entering the dsmadmc command before receiving the password prompt.  After the 
password is entered, response time is normal.  Any ideas?

David