please help

[atom]

works fine for me:

root@sf:~/xy/oclHashcat-lite-0.09# ./oclHashcat-lite64.bin ba7617f5a5841de469a3110754d3c5c6 --custom-charset1 ?l?u?d --pw-min 28 --pw-max 28 1896352_125477090_?1?1?1?1?1?1?1?1?1?1
oclHashcat-lite v0.9 by atom starting...

GPU-Loops: 256
GPU-Accel: 160
Password lengths range: 28 - 28
Platform: AMD compatible platform found
Watchdog: Temperature limit set to 90c
Device #1: Tahiti, 2935MB, 0Mhz, 32MCU
[s]tatus [p]ause [r]esume [q]uit => s
Status.......: Running
Hash.Target..: ba7617f5a5841de469a3110754d3c5c6
Hash.Type....: MD5
Time.Running.: 3 secs
Time.Left....: 283 years, 339 days
Plain.Mask...: 1896352_125477090_?1?1?1?1?1?1?1?1?1?1
Plain.Text...: ****352_125477090_qkzQxaaaaa
Plain.Length.: 28
Progress.....: 349962240/839299365868340224 (0.00%)
Speed.GPU.#1.: 93672.2k/s
HWMon.GPU.#1.: 0% GPU, 51c Temp

did you update your driver?