SSH hangs on exit

[Danny Terweij - Net Tuning | Net]

From: "Brian D. McGrew" <brian at visionpro.com>

>Life is good with SSH but when I'm done and type 'exit' to leave my
>session it's hung on the client side and I have to kill it.  Anyone ever
>seen this before?  Client is FC3, doesn't matter what OS the server is,
>RHEL, FC3, FC4 and RH7.3???

exit or logout always hang here on ssh connections. i do not know better
then a ctrl-z.
And external with putty a exit or logout also don't quits.

Having this for yearsssss.

Danny