Have a Hero on Orange. Had it 2 months and ive had problems browsing since I got it.
When browsing using the mobile network it would just stay on one notch of the green bar progress indicator and either stick like that or come up with the "page not found" screen.
This would happen too often, probably about 30% of my attempts to look at a page.....all locations in UK.

Never had a problem with wifi, finds the page quickly every time.

I have just returned from abroad and before I went I purchased a 30 day roaming data package.

When I arrived the phone defaulted to T-Mobile NL, and for the next 5 days I had complete trouble free very fast mobile network connections, 100% found every page I looked for.

Returned to UK and back on Orange network Im having the same problems connecting to pages on the mobile network.

So I can only presume from this that The Orange network is at fault, and not the phone.

I have read lots of threads on here about the Hero having poor reception problems, well when I was abroad on a different network it acted like a different phone, signal bursting out the phone, mobile network absolutely bang on.

Returned home and back to the loss of signal, texts not getting sent, "no page found" problems I had before I left.

 

Build Number 2.73.61.5

 

Already have Dolphin and like the default browser when in the UK not finding pages about 30% of the time.
When abroad both browsers had 100% page found success rate and a noticable increase in speed finding my bookmarks.