I have just added the latest CVS version of the Yahoo transport and it seems to be working from my initial tests. Please have a look at it and report findings. To make it work I removed all the old registrations on it, so you woul have to re-register the transport on your account.
This is a little beta, so no guarantees!
We have now downloaded and installed the latest version of the ICQ transport. Please test and report back if it works.