Apple released the single-processor 1.8GHz Power Mac G5 as an low-price alternative to its dual-processor configurations in 2003 and subsequently released an update to this model--with a slower bus speed--in 2004. The problems appear to be isolated to updated 2004 model--which also has since been discontinued in June of 2004. The website documents three specific symptoms that cause the system to crash: The "Eject Syndrome", caused by pushing the CD eject key, sometimes crashes all applications related to mounting or unmounting a volume/drive; a second sympton is described as a "Wake from Sleep" syndrome, where the machine will not properly wake after being put to sleep; and the third is called the "Full Screen OpenGL syndrome" under Mac OS X 10.4 Tiger, which causes the machine to cease all graphics functions after quiting a full-screen OpenGL-based application following a few hours of operation. These symptoms have been reported by dozens of users on Apple's free support area. "The best thing about this bug is the fact that it can be reproduced. The worst thing about this bug is the fact, that it affects only (you guessed it) PowerMac G5 Single (late 2004). The freezing symptom can be noticed from within safari, too. After about two hours of uptime there is a high chance that the mac freezes when watching an embedded quicktime movie. A good way to reproduce this failure is surfing to the apple quicktime page after two hours of usage." The site offers a few workarounds that seem to help some users, including turning off some power management features, reverting to Mac OS X Panther, using the more expensive Mac OS X Server, and more; however, the workarounds appear to be temporary and in some cases, cost the user time and money. Interestingly, the site notes that one particular "freeze" may be temporary and the user may regain control of the machine after waiting a few hours.