WordPress MU

Hi,

I've successfully installed WPµ but i've 3 problems :

1/ In master domain, only jpg jpeg png gif are allowed.
But, in an user blog, php/txt and other filetypes can be uploaded :(
Max upload file size works fine instead.

2/ I upload an image, no thumbnail is available and if i'm including this image to a post, image will not appear and ?attachment_id=9 is in adress bar :(
I've changed .htaccess like this :
RewriteRule ^([_0-9a-zA-Z-]*)/?files/(.*) /wp-inst/wp-content/blogs/$1/files/$2 [L]
RewriteRule ^([_0-9a-zA-Z-]*)/?wp-content/blogs/(.*)/files/(.*) /wp-inst/wp-content/blogs/$1/files/$3 [L]

3/ Folder wp-inst/wp-content/blogs.dir/2/files/2005/12/ is readable by all users: (

Regards

Lexo

1 - allowed file type fix

2 - htaccess fix (vhosts only)

3 - change permissions so group and owner are the webserver user and other is none. (not tested but should work)

1/ Plugin allowed file type works fine
2/ htaccess for images works fine
3/ Added this to my vhost config

<directory PATH/TO/WEBSITE>
Options MultiViews -Indexes FollowSymLinks SymLinksIfOwnerMatch IncludesNoExec
</directory>