I have searched for an answer to my problem but nobody seems to have an answer. I can connect to the web on my home wifi, I can connect to to google talk, gmail ect. I can connect and search Android Market BUT I can't download an app I just get the message "Download was Unsusccessful" It seems almost like my firewall is blocking app downloads so I searched for the Android MArket Port info and found that it uses UDP and TCP 5228, I opened these on my firewall and get the same error. After some more searching I found this solution to clear cache SETTINGS > APPLICATIONS > MANAGE APPLICATIONS Once in manage applications, click the menu button and select filter and filter by all. Now delete the data AND cache for the following applications (if you only get the option to delete one or the other, then do what is available): Download Manager Google Apps Google Talk Service Google Talk Storage Internet Market Talk I have tried this and still I have the same error on an atempted download. Is there another port to open on the firewall or is there another solution please help. I must point out that on my mobile connection I am having no problems.