x2 for 'Jason'

I actually often say "jay ess oh en", but only to mess with people's minds. Just like I pronounce PHP as "fp", and MySQL as "My Suckle".

In all seriousness, my vote for 'jason' as well.

According to wikipedia:

'j' as in 'jam'
long 'a' as in 'base'
's' as in 'sigh'
'on' as in 'button'

In other words: jason ;)

@Senff - LOL at "fp" and "My Suckle". MySQL is an interesting one though - I've heard it pronounced "My Sequel", but I've always said "My ess kew el". Actually, I just checked, and Wikipedia says that "My Sequel" is incorrect, so.. ha!