I have a number of problems with my N810. Any suggestions gratefully received!

The email program will show 'loading' but does not. It never appears. If I reboot (x-term>init 6) and run it, it appears. If I then close it, sometimes it will load, sometimes not. If it once does not load, it will not load subsequently until re-booted.

Once loaded, if it shows an unread email and I go to download it, it shows 'retrieving' and stays there. It does not succeed in retrieving it. It used to download mail automatically but mostly does not now, even though it tells me there is new mail.

Now, when attempting to sync to my Google calendar using Erminig, it tells me it is downloading Google events, then gets 20% of the way across the progress bar on 'Processing Google events' and stays there.

Both programs respond to input, they just don't function.

My wifi is working well, all connection parameters are good, as are passwords and logins. The web browser continues to work as normal.
Any ideas, anyone, please?