My user upload a avatar and this file get chmod 600. with this permission my serveris not able to show this file. I need 644 or simelar. How to change it?

You can try to have the script change the permission after it's been uploaded. Try this. Edit changebasic.php, line 388 looks like this:

move_uploaded_file($_FILES['userfile']['tmp_name'], "{$config['UPLOADED_AVATAR_PATH']}/$Picturefile");

Right after that, add this:

chmod("{$config['UPLOADED_AVATAR_PATH']}/$Picturefile",0666);

yes just found out and like to post but you are faster. It worked.

V7.0

Would this also be related to "Check File Permissions" ?

When checking them in the control panel,
for the life of me could i get the avatar file check
to go green with okay?

It seemed that when ever i run the check,
it changed the file permission too?

Then i would go back and 777
run the check and they become 655 or something?