1) News this morning - BBC i think (it was 6 am)
2) Not very. Never do. Odds of a home user being hit or damaged by these flaws is a bit rare, obviously with the exception of MSBlaster. But then again the patch for that had been out for a month or two when someone exploited the flaw.
3) Part MS, part hackers. MS should have tighter control over their code and what it can do. Exploits and flaws seem to be found regularly, (mostly before they are used maliciously though) and i feel this is the result of sloppy production or a desire to increase functionality in Windows at the expense of security.
Imagine if you bought a car and then found that by tapping a certain body panel in a certain way you can trip the central locking and thieves could get in? Would you buy one? Would you take it back it you had?
Then again if it wasn't for the hackers then there would be no reason to worry. The flaw could exist without any worries of it being used...
4) First thing i did after checking for AV updates.
6) Most of these flaws seem to really be of concern to small business / home users. I'm sure that a major business would have sufficient additional security (not the XP built in Firewall :-O) to deter most hackers. Home user PCs are not very interesting unless you have a specific reason to be there. I don't think MS quite realise how let down some people feel when this happens or how it affects the real world. When the flaw in Windows was found that allowed the MSBlaster virus to strike MS suffered some bad publicity but we are so used to it now it doesn't seem to register any more. Its all very well MS releasing patches for this, that and the other every week or so but most users i encounter don't really understand what the patch is or what its for or even why they need it. They just want to switch on, surf, write a letter and switch off without having to understand the concept of exploits, hacking and patching.
Maybe the next version of Windows will automatically patch for you behind the scenes?