On Thursday, the Wall Street Journal reported that Apple was investigating the sluggish performance of iOS 4 on the iPhone 3G. While Apple is beginning an investigation, a reader over at Neowin was hands on with an iPhone and may have stumbled upon a quick fix. The problem is apparently remedied by turning off all the spotlight search options within Settings->General->Home Button->Spotlight Search. Though this may be a temporary band-aid, it may be enough to hold you over until Apple determines a root cause and issues a fix. If anyone gives it a try, let us know your results in the comments. Read