Help Dead Screen Space

[redskyfire]

hi, my HTC legend, after a month has two problems:
(a) the top 1/8th of the screen is completely dead, so I cannot load names against numbers: ANNOYING
(b) after a few minutes navigation the whole screen goes dead.

Any ideas/similar experiences? Email to redskyfire@hotmail.com as well would be appreciated. It is not under warranty, and in Australia is people know good cheap repairers ...