Hello, I can confirm this bug, I'm experiencing exactly the same issue on my Sony Vaio S5M (a slightly updated S4M).
I'm stuck with a 2.17 kernel because every later kernel my laptop refuses to power off after the shut down (I used both official debian -686 kernel and the vanilla ones). If you need to I can provide whatever log file for the linux-image-2.6.18-686 package (or for 2.6.21). Bye, Emme -- "Aspetto un'emozione sempre piu' indefinibile" (CCCP Fedeli alla linea) -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

