mysql apache charset problem

[foxphiles]

mysql apache charset problem

hi, i have this strange problem.
i use thai language and when i query data from mysql the character comes out right, sometimes. and sometimes just unreadable.

here is example of the output.
http://www.wellcommobile.com/ok.gif << this comes out right

http://www.wellcommobile.com/no.gif << this is wrong

those two output is done at close time together, just refresh the browser and results change.
any idea where i should go check?

thanks in advance.

[sysconfig]

I am not sure but I think which charset are you using with Apache?

I mean the Default Addcharset type...

[falko]

Also, did you put the correct charset in the HTML header? Which distribution do you use?