well, i dont think anyone unlocked it, as you can freely use the sprint version on any non u.s. gsm carriers. it seems your on rogers? before you flash a custom rom, you will have to unlock it. you can find more info on that here...
http://forum.ppcgeeks.com/showthread.php?t=93252
its a pretty simple process, but before you try that if you just want to speed it up a bit, try a temp file and ram cleaning program. ill direct you to the one i like to use.
http://www.freewarepocketpc.net/ppc-...cleartemp.html
i hope this helps!