ATI Technologies (ATYT) was halted just a little ago. News pending.

Update (August 29, 2005 4:26 PM):
ATI Tech lowers Q4 revenue guidance.

Update (August 29, 2005 4:34 PM):
ATYT revenue guidance for Q4: $465-480M, compared to the expected range of $550-580M provided earlier; Reuters cosensus $559M.
Despite ATYT is already at low historical levels, it will still gap down after the stock is opened for trading.

Update (August 29, 2005 4:55 PM):
ATYT down by 12%. Ouch.