Hi there
I have the same problem. if we use IE6 it works fine however if we use Firefox, when we work normally after some time logged in, when we try to copy a document it works, however when we then try to paste it in another space, nothing happens. We need to log out and log in back as in Firefox Alfresco Copy and paste nodes, works only few mins right after you log in.
I am sure it is a firefox configuration, but we did not figure out how or why yet… Any ideas of why this might be happening?
Thanks a lot in advance