EVO 4G launch day antics: Sprint's computers overwhelmed, Radio Shack listing CDMA iPhones?

You might imagine that we're getting a pretty wild variety of EVO 4G-related tips today, seeing how it's launch day and all -- but a couple really stood out for us:

• Sprint's activation system is apparently buckling under the pressure, an issue that's giving us nightmarish flashbacks to iPhone launches of days gone by. We've even heard reports of poor shoppers being "turned away" when reps are stymied by the situation. A wildly successful product is both a blessing and curse, is it not?

• One corporate store clerk says Sprint's system is now entirely down, and employees are being forced to write receipts by hand. "We have sold out (and pretty fast at that), but can't do anything at this point, not even a bill pay," he adds.

• We've gotten multiple tips saying that Radio Shack now lists a $400 early termination fee in its contract for the iPhone on Verizon and Sprint. Our guess is that this is just some generic verbiage, not a sign of an impending CDMA launch, but you never know.

• One tipster said his EVO came with a Samsung microSD card, rather than a SanDisk. We don't know what to make of that, as it was far too late for HTC to head off storage bugs at the pass.

Keep us updated with your launch day travails, folks!

[Thanks to everyone who sent these in]