Indeed. From a Linux point of view the worst one are often the least well
o P6 spurious IRQ bug (ask LNZ how much fun it was)
o Pentium B/C stepping SMP bugs
o 486 'write to memory I dont own' FPU bug
o 386 POPAD in 16bit cs
The FPU bug in the pentium was a nuisance, these others have trivial work
arounds. And yes all CPU's have bugs - just read the sparc source code
before moaning about intel bugs!