A few considerations before:
1. When you want to copy text from what's being written in a channel (a.k.a other people's words), you don't have to "copy", but select the text and it is copied in your clipboard automatically.
2. When you want to copy text from what you have said (a.k.a the part of the window where you can actually do the writing), there you
do have to go through the good ol' copy n' paste routine.
3. You can only paste text in the area described before (where you write).
Excuse me if this is simplicity itself, but no one can be too careful or too thorough when troubleshooting.
Hope it helps
