1/4 cpu cores being used
My quad Q6600 always on 25% load while cracking, even after numerous hours of work. Had 5850 before running different version of hashcatplus, I know for sure back then cpu wasn't used. Now is. Win7.64, Cat13.1, 7970. Used driver fusion, reinstall - same. I paste output maybe you'll see something unusual. Like big hash file. Can that be the cause?
oclHashcat-plus v0.14 by atom starting...

Hashes: 13824983 total, 1 unique salts, 13824983 unique digests
Bitmaps: 21 bits, 1048576 entries, 0x000fffff mask, 4194304 bytes
Workload: 512 loops, 500 accel
Watchdog: Temperature abort trigger set to 90c
Watchdog: Temperature retain trigger set to 80c
Device #1: Tahiti, 2048MB, 925Mhz, 32MCU
Device #1: Kernel ./kernels/4098/m0000_a3.Tahiti_1084.4_1084.4 (VM).kernel (378504 bytes)

[s]tatus [p]ause [r]esume [b]ypass [q]uit =>
Session.Name...: oclHashcat-plus
Status.........: Running
Input.Mode.....: Mask (?2?2?2?2?2?2?2?2?2?2)
Hash.Target....: File (d:\MD5g.txt)
Hash.Type......: MD5
Time.Started...: Mon Apr 29 22:14:39 2013 (39 secs)
Time.Estimated.: Mon May 06 03:18:18 2013 (6 days, 5 hours)
Speed.GPU.#1...:   573.4M/s
Recovered......: 0/13824983 (0.00%) Digests, 0/1 (0.00%) Salts
Progress.......: 10485760000/141167095653376 (0.01%)
Rejected.......: 0/10485760000 (0.00%)
HWMon.GPU.#1...: 99% Util, 43c Temp, 35% Fan
Plus I was writing this while cracking, windows was kinda lagy so BSOD popped up. Very nice blue color. Didn't saw that for a while. Point is after --restore i get "ERROR: cannot read oclHashcat-plus.restore". But that's another, sad story. Will leave that for another time.
Hashcat-plus is a GPU-based cracker. It is specifically designed NOT to tax your CPU.
i think that's his point, is that it is using 25% cpu when he feels he shouldn't be.

however, in this example he is cracking 13.8 million hashes. and while he didn't paste his command line, he's probably using --remove or some other switches that are likely driving up cpu utilization. with that many hashes, i would say this is probably normal.
Yes, I do use --remove. Probably lots of file reading operations. Thanks for reply.