i have do it:
alter table 4images_categories add index idx_catname (cat_name,cat_id);
alter table 4images_comments add index idx_cmtid (comment_id);
alter table 4images_comments add index idx_cmtuname (user_name);
alter table 4images_groupaccess add index idx_grpaccess (group_id,cat_id);
alter table 4images_groupmatch add index idx_grpmatch (group_id,user_id);
alter table 4images_groups add index idx_grp (group_id,group_name);
alter table 4images_images add index idx_images (image_id,image_name);
alter table 4images_images_temp add index idx_imgtmp (image_id,image_name);
alter table 4images_lightboxes add index idx_lightbox (lightbox_id);
alter table 4images_postcards add index idx_postcards (postcard_id,image_id);
alter table 4images_sessions add index idx_sessions (session_lastaction);
alter table 4images_sessionvars add index idx_sessvars (session_id,sessionvars_name);
alter table 4images_wordmatch add index idx_wordmatch (image_id,word_id);
alter table site_users add index idx_users (id,pseudo);
Its always loww
Plz i need help !!!