I installed 10.4.4 on my PowerBook last night and now I cannot mount disk images. I tried double-clicking .dmg files, opening them from within Disk Utility, and running the hdiutil command. Some error output I'm getting from various attempts: load_hdi: timed out waiting for driver to load diskimages-helper ERROR: unable to load disk image driver - 0xE00002C0/-536870208 - Device not configured. I've run Repair Permissions and Repair Disk (from OS X install CD). But nothing. Searching for these kinds of errors only returns problems related to 10.3.1 which are resolved in 10.3.2. Oh, yeah, and the PowerBook does not recognize my internal speakers. Any help? Thanks!