Minor readme updates.

README

@@ -873,21 +873,14 @@ any further.
 
 Q: Can you change the autofan/autogpu to change speeds in a different manner?
 A: The defaults are sane and safe. I'm not interested in changing them
-further. The starting fan speed is set to 85% in auto-fan mode as a safety
-precaution, but if a specific fan speed has been set, it will use that first
-before adjusting automatically.
-
-Q: The fanspeed starts at 85% with --auto-fan. Can I set it lower?
-A: The initial fanspeed will always start at 85% unless you choose your own
-value with --gpu-fan. In this case it will use the value you give it with
---gpu-fan as the first fanspeed, but it will also use this as the maximum fan
-speed unless overheat is detected.
+further. The starting fan speed is set to 50% in auto-fan mode as a safety
+precaution.
 
 Q: Why is my efficiency above/below 100%?
 A: Efficiency simply means how many shares you return for the amount of work
 you request. It does not correlate with efficient use of your hardware, and is
 a measure of a combination of hardware speed, block luck, pool design and other
-factors.
+factors
 
 Q: What are the best parameters to pass for X pool/hardware/device.
 A: Virtually always, the DEFAULT parameters give the best results. Most user
@@ -912,7 +905,7 @@ this time.
 
 Q: Which ATI SDK is the best for cgminer?
 A: At the moment, versions 2.4 and 2.5 work the best. If you are forced to use
-the 2.6 SDK, -v 1 might help, along with not decreasing your memory clock speed.
+the 2.6 SDK.
 
 Q: I have multiple SDKs installed, can I choose which one it uses?
 A: Run cgminer with the -n option and it will list all the platforms currently