sound scheme or bigger problem?

For years I have used my own sound scheme and have come to rely on my
machine to make certain sounds for various events. This began with Win 95.
I've recently installed Windows XP SP-2 and of course, my sound scheme is
part of the setup and also now includes sounds for logging on and off. This
is my problem:

first:
Log Off profile - returns to Welcome screen - hear "Exit Windows" sound
(fine I can live with that)
Log On profile - returns to desktop - hear "Log On" sound
Log Off Restart - hear "Exit Windows" then reboots and everything is fine.

second:
Switch User - returns to Welcome screen - hear "Log Off" sound
Log On again - returns to desktop - hear "Log On" sound
So far - so good.

third:
Switch User - returns to Welcome screen - hear "Log Off" sound
Log On new profile - get new desktop - hear BOTH "Log On" sounds (this
profile and previous)
(if no sounds enabled here - still get last user's "Log On" sound.)

Ok...this is not a big problem in itself - I'm just not sure if this is
"normal", and I don't have access to another Win XP to compare.

The much bigger problem, (not sure if related), is most of the time -(not
always)- once I'm in that second profile - I'm stuck there. I cannot Log
out, I can't Switch user, I can't Shut down. CTRL-ALT-DEL will not bring up
Task Manager. But I can type "taskmgr" in the Run box which does start the
app. However, this doesn't help much because I still can't get out from
there either. No matter what I do - I keep getting returned to the desktop.
I can end processes and I can log off the other profile but I'm still
stuck. The only way out is the Power Switch.

Have searched MSKB and found reference to something similar Norton AV
2003 regarding CCAPP. My Norton is 2004 and is totally up-to-date. The MSKB
mentions nothing about the sounds mixmatch that I've observed. Again, I
don't know if the two are related. If the sound mixmatch is "a feature", I
can live with it. Can someone check this out please and let me know? It's
hard to troubleshoot in two directions at once.

--
~john aka: jopa