1. Hm.. I am on CDMA. So I don't know the first one.
2. Sometimes, webpages hate your phone. (BlackBerry's developer page hates me.)
Other times the phone is just still loading.
Then other times its random lag.
2. Running latest 7.1 and it happens to me too, especially when I have 4+ tabs opened in the browser. I agree with Deathcommand, probably just loading.
1. Whenever I connect to wifi, my phone goes crazy and switches from H+ to Edge to GPRS...any ideas?
Did you ever solve this? My wife's 9900 (t-mobile) does the EXACT same thing - I have currently disabled wifi because it makes the mobile network very unstable. It sucks...