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Don't worry, soon, some ******** will come along and use the Jedi mind trick on you. They will claim that WiFi works great for them, and it's not a design flaw of the Captivate. Don't compare it ot an iPhone, though, or they will get all sophomoric and call you an Apple fanboy.
That does nothing to address the fact that the Captivate tends to display lower 802.11G performance than other similar devices. And, it doesn't use 802.11N at 5GHz as the majority of routers present.
No, the Captivate is perfect. It must be us.
Talk about being addicted to Kool Aid...
If you actually read my post and not come in here just to troll, you would realize I have no issues with WiFi. I was questioning the 3G speeds.

Didn't mean to come off as harsh if I did
Just saw on macrumors that a lot of areas were affected by low 3G speeds. Not really sure if AT&T capped the 3G speeds or it's just a network issue [although it's referring to upload speeds].
AT&T capping 3G upload speed in NYC (iPhone 4) - Mac Forums