Following earlier reports of failing memory modules with Elpida Hyper chips, first Corsair and now OCZ Technology is stopping sales of Elpida Hyper DRAMs. Although OCZ claims it has not yet seen extended failures in its Elpida Hyper equipped memory modules, because an earlier batches were used, it is also pulling out the presumably affected memory modules and memory kits. This is OCZ's official statement:

In regards to the potential issues relating to Elpida Hyper IC's, OCZ has not yet seen extended failures in the field, and the Elipda Hyper IC's we have used came from earlier batches so we do not yet know if this is the reason why we are not seeing field issues but as a proactive measure based on the latest information from media reviewers like AnandTech we have officially held the use of any Elpida Hyper IC's at this time. Any customers that are seeing issues are encouraged to contact us and we will absolutely take care of all customers with a no questions asked refund or exchange for another OCZ product of equal value, whichever the customer prefers. We want to make sure that our customers have peace of mind and the confidence that we will take care of any and all issues related to modules that utilize Elpida Hyper chips.

Source: OCZ Support Forums