RHEL5 and PowerPath 5.0.1 installation issues

Hi there,
i'm having trouble installing PP on a Dell server. The machine is a Dell 1955 Blade with 2 qlogic hba, the storage it's a Clariion CX3-10c.
I have created the luns on the SAN and connected the hba's, my kernel recognizes correctly everything and sees 2 block devices correctly /dev/sdb and /dev/sdc.

Now i would like to use PP to manage the whole thing, I just installed it, registered my license and followed all the installation instruction but the devices /dev/emcpowerX are not present.
The command powermt display dev=all does not give any output.

Looking at my logs I find these messages:
Jan 18 13:41:32 alpha kernel: emcput module loaded.
Jan 18 13:41:32 alpha kernel: Info:emcp:device structure has no scsi disk ptr
Jan 18 13:41:32 alpha kernel: Info:emcp:device structure has no scsi disk ptr
Jan 18 13:41:32 alpha kernel: Info:emcp:Received add upcall for index 0x0 devno 0x800000
Jan 18 13:41:32 alpha kernel: Info:emcp:Successfully setup scsi disk class driver block device open/release/ioctl traps = 0xf884ae40
Jan 18 13:41:32 alpha kernel: Info:emcp:open=0xf9218330 close=0xf9216220 ioctl=0xf8847ea7
Jan 18 13:41:32 alpha kernel: Info:emcp:Received add upcall for index 0x1 devno 0x800010
Jan 18 13:41:32 alpha kernel: Info:emcp:device structure has no scsi disk ptr
Jan 18 13:41:32 alpha kernel: Info:emcp:device structure has no scsi disk ptr
Jan 18 13:41:32 alpha kernel: Info:emcp:Received add upcall for index 0x2 devno 0x800020
Jan 18 13:41:34 alpha PPME: API: Info: Set IO Cloning Control in kmd: reads=off, writes=off
Jan 18 13:41:34 alpha PPME: API: Info: Set IO Cloning Control in kernel: reads=on, writes=on

Any hints ?

here some details on my sw config:
uname -a : Linux alpha 2.6.18-53.el5PAE #1 SMP Wed Oct 10 16:48:18 EDT 2007 i686 i686 i386 GNU/Linux

modinfo qla2xxx:
filename: /lib/modules/2.6.18-53.el5PAE/kernel/drivers/scsi/qla2xxx/qla2xxx.ko
version: 8.01.07-k7

PowerPath: EMCpower.LINUX-5.0.1-022.rhel5.i386.rpm


thanks !