But, isn't run a bonus to speed? This errata statement conflicts with itself. Run says "speed +2", which is a bonus to speed. So, no, your general statement that you may move more than your speed is wrong. For example, if a power says you can move your speed +2, then you can still move only your speed unless you use a run action.
Right?
What?
Your speed is an explicit value, set for you by your race. Dwarves have speed 5, most races have speed 6, some have 7, and this can be altered by armor and features and what not.
So, look at that entry on your character sheet that says speed. Now, imagine it is 5. Your character uses a power that says 'shift 6.' How many squares do you shift?
6. Obviously. Because your speed isn't called into question. Your speed is not relevant to that form of movement.
So, let's try this again. Imagine that number is now... 2. Your character uses a power that says 'shift 6'. How many squares do you shift?
6. Because, as above, your speed is irrelevant to the power.
Now let's say you have a power or action that tells you to move your speed + 2. And, let's say your speed is.... 2! Well, 2 + 2 = 4. So you'd move 4.
When you are slowed, your
speed is now 2. Other things are not made 2. Your powers do not have numbers changed on them to 2. The ONLY thing that changes when slowed is that one thing on your character sheet that says 'speed.' Only powers, effects, and actions that ask for your speed care about slowed, and if it tells you to add something to your speed, that gets added onto that 2 because that's how numbers work.