Problems installing Solaris 10 10/08 on Sun Ultra 30

Hello all, Please, no flames if you don't consider an Ultra 30 a "classic computer". :-) At 300 MHz, it's not terribly recent either. My system is a Sun Ultra 30, 300 MHz, 1.7 GB RAM and a 16 GB hard disk. Trying to install Solaris 10 10/08. The initial installation reboots after having copied Solaris to the hard disk and the machine freezes at the line "creating new dsa pair"... I've given it a few hours on several occasions with no success. Note that NetBSD works just fine on this system and that I encountered the same DSA key problem with Solaris 10 4/08. Also, I had had significant trouble installing NetBSD initially because of defective memory (the system would freeze at "boot cdrom" until I removed the offending items). Once the problem with the memory was resolved, the NetBSD installation worked perfectly and I presume that the remaining sticks are fine. Finally "boot -k" (after the Solaris installation has copied Solaris to the hard disk) yields no further details. - Alex