While record sales are generally a desireable thing, that one-time spike in demand can leave service providers scrambling to cope on launch day. Evo 4G owners are well aware of this after noticing one of the handset's flagship features -- Qik video calling -- was unavailable in the Android Market on Friday. After correcting the issue, Qik then had to pull the app after users experienced intermittent service failures resulting from what Qik calls "an unprecedented 20x" workload increase on its servers. The Qik team is scrambling to prov
