Just reinstalled kalyway 10.5.2 b/c I tried to update with apple 10.5.6 and sh@t got skrewed. Reinstall went fine, but on initial reboot the system hangs at grey apple logo...little grey wheel keeps spinning beneath, but a white box appears centre screen with a grey circle with a line slash thru it. What gives? I'm on a stock hp zd8000 laptop which worked fine before. Tried using all the kernels, too.

Updating kalyway... Update using kalyway combo update to 10.5.3, the jump to 10.5.5, then read about how to install 10.5.6...