I have booted 10a380 installer restoring 10a380 image to usb HD, installing pc_efi 9 v2 to usb hd, and installing in extensions folder of restored installer (this image has a complet extensions folder) some kexts (ps2, azaliaaudio, disabler, dsmos and aty_init), then booting from usb hd with -f and -v to view messages. Install as usual without problems, then reboot, and boot with an existing leopard installation, install pc_efi and kexts to 10a380 partition, make active and reboot with -f -v.
Then permissions an disk utility works perfectly.
Today I have upgraded to 10a394 directly from software update without problems. All working
and have qe/ci with aty_init injector (I have a 8600m GS 256 mb and I never have success with efi strings and leopard).

System Specs: Aspire 5920G:

C2D T5450, 4 Gb 667 Mhz, Nvidia 8600m GS 256 Mb, ICH8-M, alc 889, and RT2573 usb wifi dongle (3945 and broadcom doesn't work)