problem with hcitool scan

Hello, i've a problem with hcitool

software versions:

kernel:  2.6.22-14-generic
bluez:   bluez-utils  3.19-0ubuntu3           

when i use /hcitool scan/ i have the following result:

first device (mobile phone) (3 try with hcitool scan)
/00:12:*52*:3D:38:B5  n/a      /--> correct/
00:12:*D2*:3D:38:B5 n/a       /--> wrong/
00:12:D2:3D:38:*B4 *n/a      /--> wrong
/
/second device (mobile phone) (5 try with hcitool scan)/
*00:1E:4C*:E2:F1:5C xxx     /--> correct
/00:1E*:7C*:E2:F1:5C xxx      /--> wrong
/00:1E:*4C*:*F2*:F1:5C xxx     /--> wrong
/*C0:9F:CC*:E2:F1:5C xxx    /--> wrong//
/*00:96:4C*:E2:F1:5C xxx    /--> wrong//
/
/the devices are only two but the address are different.
if i try to ping (l2ping), only the first address is correct.
Can you explain me what is wrong?
thanks!

signo

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