No one has mentioned this to me yet in reference to SAP, but then again if SAP were doing this how could they mention it?  This blog article highlights the fact that some large and unnamed software vendors are precluding customers from discussing contract terms,  bugs, defects, and even contractual breaches with anyone without their permission.  This would make it difficult to use a third party contract negotiator (something that is becoming popular or even essential on large contracts).  His point is that with software sales so far down, this is the perfect time to negotiate more favorable terms with your vendors, and have some of these bizarre provisions stricken from your contracts.

If anyone finds examples of these contract restrictions sneaking into your agreements please share them.