i have a bb 8310 using.

everytime when i try to log on my Ebay account or online banking, it alway says that,

"Http error 500: internal server error"
more details as
"500: web service problem: please contact the service provider."

sometimes shows,
"the item you selected cann't be diaplayer. do you wish to save the item?"
"unsupported media type: application/octet-stream"


anybody knows what going on?