500-series PowerBook owners with Apple's PCMCIA expansion module have been reporting problems with type III PCMCIA devices sticking in the slot, modem driver problems, and grounding trouble with the upper slot when certain cards are inserted. A revised module, M2995LL/B, will replace the original (M2995LL/A) by the end of January. Affected owners (such as those with an Apple Mobile Message System paging card) will be able to request a replacement. (Further details will be available later this month.) New modem drivers will be available separately in a version 1.0.1 update for the module's flash ROM for users who are not experiencing hardware difficulties. [MHA]