As Tim blogged about earlier this morning, last weekend we released a new update to SL 1. This update addresses top customer issues and includes the following list of fixes:
Reduced power consumption
PCM is used for audio (Fixes this issue)
Better support for Mac OS X Leopard fonts
Audio/Video sync issues on Mac are addressed
More robust support for ASX playlists
Improved media stability
This update will be pushed out via the auto-updating technology in Silverlight, however, if you’re impatient, you can install the newest versions from here. Also, all these fixes will be in the next beta of Silverlight 2.