I don't know if it's directly related to the light leakage problem (as mine suffers from), but it appears that the HTC EVO also suffers from dust/contaminants working their way between the glass and the LCD panel. Ive only had the EVO for a couple weeks, and I only keep it in my pocket while driving/ridding my motorcycle, youd think more care/engineering would go into a flagship product...
Here's a picture:
Here's a picture: