Problem se sessions

Po nacteni scriptu, kde pouzivam session obdrzim tyhle hlasky a sessions nefunguji... pritom ja ve zdrojakach nic nemenil a vzdycky mi to takhle na webu fungovalo (administrace, uzivatelske sekce atd.). Nevite nekdo co s tim? Diky za kazdou radu, potrebuji mit web co nejdrive v poradku...

Warning: session_start(): open(/dev/shm/sess_aad420ee1d2c5d722ff348112c6bf570, O_RDWR) failed: Permission denied (13) in /3w/nazory.cz/a/acko/main.php on line 1

Warning: Unknown(): open(/dev/shm/sess_aad420ee1d2c5d722ff348112c6bf570, O_RDWR) failed: Permission denied (13) in Unknown on line 0

Warning: Unknown(): Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/dev/shm) in Unknown on line 0
<HTML>sorry, opraveno</HTML>
diky Miro, tomu rikam podpora (ani ne 15minut...)
u domeny parizan.aktualne.cz
nefunguje session save path: /dev/shm

Session save path /dev/shm, Uwriteable
sessions funguji - vyzkousej si to sam treba timhle skriptem:
<?
session_start();
echo $_SESSION[count]++;
?>

druha vec je to, co si ten soft narokuje delat s tim adresarem