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.