It takes me 6 tries to get onto the server because Tekkit keeps cashing to white screen as soon as I do anything.
Absolutely dog****.
I have been looking into this for the last month and may have something comming in the next few days to rplace tekkit clients.
Just have to finish off some small testing and once i am happy and admins have tested the new client we will release it for you all but be warned it is is near if not bigger that 100MB in size.