I had some performance issues with build 103 after it had been up for a little while but didn’t spend time diagnosing it as I upgraded to build 104. I suspect as the pool was quite full I might have run into CR 6596237 – “Stop looking and start ganging”
hippy@hobbes~$more /etc/release
Solaris Express Community Edition snv_104 X86
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Assembled 02 December 2008