I have been having this for the last 2 weeks on HTC DESIRE froyo. The browsing doesn't work neither on wifi nor mobile networs(none of them).
And this when ALL other applications accessing the networks work without a glitch (games, sync accounts, mail, android market).
But I installed Opera and this browser has no problem whatsoever. So what the heck is going on, it seems like there is a problem of PROTOCOL? (http and https) and the browsers not manging some changes that Opera has no problem with while the stock broser and Dolphin fail to handle? Is anybody looking at this?
For the moment I recommend you use Opera for browsing. At least this is what I am doing altough Opera is a pain in the arse to manage Bookmarks or settings . . . they have a browser, now they want you to play their game too . . .