Problem with number of posts at homepage

[bdr111446]

Yes,,like i said im facing a problem with fixing the number of posts that will be shown at the homepage
i've did it through

Settings >> Reading :
Blog pages show at most "10" posts

which didn't solve this problem
it might be something located in the theme which makes all the posts appear at the Homepgae

if anyone could help me and tell me what to do i will be thankful
waiting a help ..

Regards
BdR