Solaris 10 + dual-core Opterons = record breaking performance!
For many years now, I've been a SPARC bigot. The only machines I've owned (except for really old 8-bit stuff), until recently, were SPARC based (modulo my 68030-based Sun 3/80). But for all of SPARC's virtues, there's no denying that x86's (and especially AMD's) price/performance is fantastic, especially when mated to a high performance OS like Solaris. Sun recently released the latest benchmark results for their 4-way, dual-core AMD Opteron server, the V40z. This combination smashed the previous record; more details in the press release.
If this doesn't convince the nay-sayers that the "Slowaris" moniker no longer applies, nothing will.