PHP pSio v0.1.1
http://www.snype.us/psio/pafiledb.php?action=file&id=49
* fixed group dirs. for mp3 pre's
+ added file cache and zs optimizations
* fixed backup crc check
+ re-did multi cd func
+ more $progressmeter cookies.
+ re-did readrace()
got it down from ~59ms to ~19ms on my main pc (3.1ghz) and from ~250ms to ~125ms on my 533mhz AMD pc. This was a single user race