I'm having the same problem with 2008.11-100a on an ECS 945GCT-M/1333 motherboard. This seems to be a regression, because 2008.11-99 installed successfully.
I tried both of jawbrewer's suggestions (turn off ACPI in the BIOS and add -B disable-acpi_drv=true) and the install still gets hung up at 99% Does anyone else have any other suggestions of how to get past this? -- This message posted from opensolaris.org