I picked up SW a while ago as I was looking for something lighter and faster than 3E. Last year, I ran a Conan campaign with it for about 20 sessions. It isn't finished, but since my players don't like the game very much, I doubt we'll complete it. As a GM, I liked SW a lot, though. It is fast, easy to use, handles almost everything with little tweaking required.
So what did my players not like? I should start by saying that I don't agree with any of these points, but here they are nevertheless:
1. SW is too "random", i.e. the with unlimited open-ended rolls yield unrealistic results
(this came up when an alert guard they were sneaking up on rolled a 32 on his notice check, so the stealthy PCs had no chance to get by him)
2. beginning characters are not competent enough
(after realizing they couldn't possible take all skills they wanted to during character creation)
3. combat is too deadly
(after the barbarian with 11 XP tried wrestling a bear and got mauled - I kid you not; the player abandoned his PC because the party didn't want to wait 10-15 days for him to heal)
Ok, they were spoiled by playing high-level D&D before that (3.5E from level 10 to 16 with lots of options allowed), but I still think they are a bunch of whiners

BTW, I gave up running the D&D game because I hated the amount of prep-time it took.
Maybe C&C will be more to their taste...