oclHashcat-plus-0.08 0% GPU

[perlish]

I try to crack des hashes with oclHashcat-plus-0.08,but it seems did not display the GPU usage right,
and it seems not make the most of GPU,because of the temperature of the GPU did not rise to 90c.

GPU:gtx 460*3
OS:ubuntu 11.10 64bit
driver:NVIDIA-Linux-x86_64-295.53.run
cmd:./cudaHashcat-plus64.bin --hash-type 1500 --attack-mode 3 --outfile log test -1 ?l?d?u ?l?l?l?l?l?l?l?l

Status.......: Running
Input.Mode...: Mask (?l?l?l?l?l?l?l?l)
Hash.Target..: File (test)
Hash.Type....: descrypt, DES(Unix), Traditional DES
Time.Running.: 50 mins, 59 secs
Time.Left....: 2 days, 12 hours
Time.Util....: 3059800.9ms/3.1ms Real/CPU, 0.0% idle
Speed........: 15049.1k c/s Real, 14340.3k c/s GPU
Recovered....: 0/16 Digests, 0/16 Salts
Progress.....: 46047289344/3341233033216 (1.38%)
Rejected.....: 0/46047289344 (0.00%)
HW.Monitor.#1: 0% GPU, 72c Temp
HW.Monitor.#2: 0% GPU, 69c Temp
HW.Monitor.#3: 0% GPU, 52c Temp