Help Applications Running Extremely Slow on Captivate

[mvred]

For whatever reason, applications like WeatherBug, The Weather Channel, ESPN, Facebook, Twitter, etc. run EXTREMELY slow on my phone. I compared my Captivate vs. my brother's Motorola Android phone and his is much much faster loading these apps.

For instance, it will take 1-2 minutes just to load a radar on WeatherBug and my God I'd be lucky to load a profile in under a minute on Facebook.

Is there any apps out there to help fix this problem or do you guys have any suggestions?!

Thanks in advance!