Romain Dolbeau wrote:
If the instability affects a 300 Mhz UII module (typically in an U10 or an U5), then it might very well be faulty hardware. A lot of modules fitting that description suffered serious cache problems ; the symptoms were transient uncorrectable failure in the L2 cache, resulting in a kernel panic.
The Ecache problems only affected 400MHz Ultrasparc II modulesas used in Enterprise systems. 300 MHz modules were not affected.
UltrasparcIIi modules as used in the Ultra 5/10 were not affected.