Thanx for thinking about it!
Please let me specify: My students try to log into different accounts from different computers within one computer lab and the do not get their accounts cpanel start page, but e.g. their neighbours, strange, ain't it?
What I try now is cpanelproxy, mentioned by Kayla in
cpanelproxy.net
Maybe this helps! I haven't heard about any webpage/login/account confusion on port 80 in this computer lab. I'll give it a try.
Paul