Apologies if this has been discussed previously.
I'm using GNU emacs version 18.54, and I've just made the switch to AIX 3.2.
In 3.1, I was able to cut and paste from an aixterm window to my emacs
buffer. I can no longer do that.
I'm using x-sb-mouse.el that was recently posted in another newsgroup.
My guess is this is an ICCCM related problem.