What about the following scenario:
I write some code that gets into some module in the Pike cvs, assigning copyright of that code to IDA, any license of their choice, etc. But the code links with GPL:ed code.
The reasonable way to look at this situation is to say that this is exaclty what the LGPL->GPL upgrade clause in the LGPL is for. So it's fine to link all of this together, as long as the result treated as a GPL:ed work.