Some computers that have cache memory that appears to hang repeatedly and randomly. You may also see erratic performance in the form of ``segmentation faults'' or core dumps. This is sometimes due to the cache controller not properly detecting that Direct Memory Access (DMA) has occurred to the system memory in a location that is currently cached.
The solution is to disable the cache memory. (Refer to your computer manufacturer's documentation for information about how to disable the cache.) If disabling the cache solves the problem, you may want to contact your hardware vendor to see whether there is an upgrade or a fix for the problem. If no upgrade or fix is available, keep the cache disabled to prevent reoccurrences of the problem.