When u login to http://gmail.com, ur chatbox on gmail is taking so much time to loading.. and endup at the end with this error 'We're experiencing technical difficulties that may prevent your chats from being sent. Troubleshoot'..
u thinking probably the network problem.. u try again another minute still giving the same error..
HERE is the solution
1. login gmail account with normal way from here http://gmail.com.
2. let the loading process continue.
3. when it stop and showing this error 'We're experiencing technical difficulties that may prevent your chats from being sent. Troubleshoot', click at Troubleshoot.
4. it will take you to another window. showing this message
5. click at the highlighted link..the page again will refresh and loading to your gmail account. wait for a while and u can see ur chatbox is working just fine..
1. just login your email account with this link directly from here https://mail.google.com/mail