Sleep mode on certain boards with a certain bios has been known to lock the system when being awoken yes.
The 680i in particular was terrible on a rev1 bios.
As for the 930? Don't. Price to performance I would MUCH rather have the 1090. Read the review on here, it's a much better design than the older Phenoms. They should have given it a new name IMO.
Stock to stock the 1090 may well be slightly slower than the I7 930 but as shown it does OC FAR better than the older Phenoms. It also has six cores and when threaded correctly that's 33% more cores than the I7 has. That's like a Phenom 2 X2 sitting along side your X4 doing more work.
Either way you'll need DDR3 and either way you need to be able to justify it. Remember, all of these benchmarks are all well and good and they do indeed make your 940 look shit. But, run a game. If that game does at least 30fps min then you won't notice much of a difference. Anything over 30 min is a bonus and unless you wear glasses milk bottle thick and have the eyes of a hawk you won't notice. This is why AMD manage to stay comfortably in business making budget chips like the Athlon 2 Regor for £50. Because believe it or not it is more than adequate when partnered with a good GPU of running any game you throw at it.
Case in point my mate has a Athlon X2 @ 2.8ghz. Not an Athlon 2, worth about £30 and he gets 49fps average with 40 min partnered to a 5850.
The key to owning a PC is making a purchase and then being happy with what ya' got. I have a 940 and even though I know that the I5 and I7 trounce it I am happy with what I have. All that money would show me actual real world figures of any actual difference. I mean crap, I bench 15,400 or so 3dmarks with this 940. The test rig used to bench the 5770s in Crossfire hit 17k. Do you really think I am worried about 1500 points enough to spend a few hundred quid?
As I said elsewhere adding an I7 with full 16x PCIEs to my computer and triple channel DDR3 would net me about another 3-5fps that I wouldn't even notice..
Sure my system as a whole won't last as long as a good I7 machine (as in the capabilty for the future) but tbh I see all PC purchases as dead money any way. Once you spend it you never get it back.
I don't even sell parts any more. I have a massive stockpile under my bed

So many infact that I was able to build another complete Alienware for the price of a CPU, PSU and case. Not the ideal thing to have a Crosshair 2 rotting under your bed of course but I would rather it rot than feel gutted at only getting back about 30% of what I paid for it !
Mind you, I only paid £110 in a clearance on Scan about 9 months ago. Pennies for what you get. I am the super duper bargain hunter. Seriously some of the stuff I have bagged for next to nothing is just awesome. Perfect Alienware chassis in silver for £50 del. 750w brand new 80+ cert Alienware PSU? £25 (can still get them if any one wants one). My black chassis arrived with a crack, got a full refund and got to keep it and so on.