I work for a website company called www.breakingviews.com
We have a few users on blackberries in the office and each on different network. WHen on our site all work fine apart from the vodafone one which constantly asks you to log in when going to a new page. We have also receive feedback from subscribers that vodafone blackberries all have the same problem.
It sounds like some cookie problem. Anyone expericenced similar problem and has a fix. Would be very grateful for any help.