Fatal error: session_start Failed to initialize storage module: user (path: ) in page.tpl.php on line 35

After deleting the node created with the WSOD? I save it again and I've got:

Fatal error: session_start() [function.session-start]: Failed to initialize storage module: user (path: ) in /home/pariscin/www/themes/litejazz/page.tpl.php on line 35

instead of the WSOD and the node is created.

It's not about space:

Sys. de fich.         Tail. Occ. Disp. %Occ. Monté sur
/dev/md/1             3,0G  1,8G  1,2G  61% /
udev                  999M  176K  999M   1% /dev
/dev/md/2             456G  1,2G  431G   1% /home
shm                   999M     0  999M   0% /dev/shm

I cleared the cache.

I apllied the patch at #575690: "Failed to initialize storage module" error fixed without effect.

line 35 in litejazz/page.tpl.php is:

session_start();

from

    if (($node->type == 'ckk_image'||$node->type == 'ckk_image_fiche_poster'||$node->type == 'user_dvdtheque'||$node->type == 'user_list'||$node->type =='user_ranking'||$node->type =='user_pronostics'||$node->type =='ckk_image_fiche_photo')&&arg(2)!="edit"&&arg(2)!="delete") {
    session_start();
    if($result=db_fetch_object(db_query('select nid from node where type="fiche" and title="'.utf8_decode($node->title).'"'))){
       if(!empty($_SESSION['TestCookie'])){ print "<script> location.replace('http://".$_SERVER['HTTP_HOST']."/fiche/".$_SESSION['TestCookie']."');</script>";}
    } 
    return; } 

I've got the message instead the blank page when WSOD module is enable.