Kernel_task CPU issues (Lion, MBP 2011)

Hey y'all,
I've been noticing some "strange" behavious on my Lioin equipped 2011 MBP - I don't know what causes this, but let's say I have a fresh restart/boot up of the laptop - open up let's say Reaper (music sequencer program), and start making music...after a little while, I'll notice I start to get clicks in the audio - check the activity monitor, and sure enoug, the kernel_task is using up between 250% and 3xx% cpu for no apparent reason. The ram usage is no problem, very little ram used...however, it means that I cannot use this laptop for live use, which ***** cause I'm rehearsing for live solo shows :S
I've tried using cleanmymac and ccleaner, powering down, restarting etc. It usually reverts back to normal after doing all of the above. But I just tried doing this now, and the cpu/kernel_task is at around 250% after cleaning and a restart of Lion (latest version).
Here's a [URL="http://torbenscharling.com/process.txt"]link[/URL] to the txt acitity monitor report, and here's a copy paste, anyone got some advice on how to get rid of this problem and a healthy clean running system? (thinking about starting from scratch with a new install, but then again I might wait for the new MBP's to come before going through all that hassle)
Active Memory: 565.4 MB
Free Memory: 6.35 GB
Wired Memory: 1,018.4 MB
Used Memory: 1.64 GB
Inactive Memory: 91.8 MB
Total VM: 192.81 GB
Number of processes: 84
PID    Process Name              User       CPU      Real Mem        Virtual Mem
0      kernel_task               root       258.2    573.3 MB        6.64 GB
1      launchd                   root       0.1      1.9 MB          2.40 GB
10     kextd                     root       0.0      6.5 MB          2.39 GB
11     UserEventAgent            root       0.0      7.3 MB          2.42 GB
12     notifyd                   root       0.1      1.2 MB          2.35 GB
13     diskarbitrationd          root       0.0      2.1 MB          2.39 GB
14     configd                   root       0.0      5.8 MB          2.42 GB
16     ntpd                      root       0.0      1.4 MB          2.32 GB
19     warmd                     nobody     0.0      2.7 MB          2.39 GB
20     usbmuxd                   _usbmuxd   0.0      2.7 MB          2.39 GB
22     SystemStarter             root       0.0      1.2 MB          2.38 GB
23     syslogd                   root       0.0      1.0 MB          2.40 GB
25     stackshot                 root       0.0      1.2 MB          2.35 GB
26     securityd                 root       0.0      7.8 MB          2.41 GB
28     revisiond                 root       0.0      3.4 MB          2.39 GB
29     powerd                    root       0.0      2.6 MB          2.41 GB
32     opendirectoryd            root       0.2      10.6 MB         2.41 GB
34     mds                       root       50.0     23.0 MB         2.52 GB
35     mDNSResponder             _mdnsrespo 0.0      3.1 MB          2.40 GB
37     loginwindow               TorbenScha 0.0      27.4 MB         2.46 GB
39     KernelEventAgent          root       0.0      1.1 MB          2.34 GB
41     hidd                      root       3.1      2.0 MB          2.39 GB
42     fseventsd                 root       0.8      3.0 MB          2.40 GB
44     dynamic_pager             root       0.0      732 KB          2.32 GB
46     dpd                       root       0.0      1.5 MB          2.35 GB
50     autofsd                   root       0.0      1.8 MB          2.38 GB
51     applepushserviced         root       0.0      26.8 MB         2.45 GB
52     aosnotifyd                root       0.0      4.9 MB          2.41 GB
54     licenseDaemon             root       0.0      3.3 MB          647.6 MB
55     M-Audio FireWire Device H root       0.0      2.2 MB          665.3 MB
56     L6KSettingMgr             root       0.0      1.4 MB          613.7 MB
57     qmasterd                  root       0.0      7.0 MB          663.5 MB
58     lsd                       root       0.0      5.9 MB          672.7 MB
59     taskgated                 root       0.0      3.5 MB          2.41 GB
60     distnoted                 root       0.0      2.0 MB          2.39 GB
61     coreservicesd             root       0.3      49.4 MB         2.47 GB
64     xpchelper                 root       0.0      4.7 MB          2.38 GB
101    netbiosd                  _netbios   0.0      2.6 MB          2.40 GB
106    360Daemon                 root       0.0      1.6 MB          2.36 GB
118    socketfilterfw            root       0.0      4.3 MB          2.41 GB
120    racoon                    root       0.0      2.3 MB          2.38 GB
121    xpchelper                 _netbios   0.0      4.7 MB          2.38 GB
123    WindowServer              _windowser 7.0      42.8 MB         3.09 GB
124    ocspd                     root       0.0      1.9 MB          2.32 GB
127    rpcsvchost                root       0.0      3.1 MB          2.40 GB
139    CVMServer                 root       0.0      1.1 MB          2.33 GB
140    launchd                   _cvmsroot 0.0      892 KB          2.35 GB
144    CVMCompiler               _cvmsroot 0.0      2.9 MB          2.33 GB
146    launchd                   _spotlight 0.0      948 KB          2.36 GB
154    distnoted                 _spotlight 0.0      1.4 MB          2.38 GB
155    xpchelper                 _spotlight 0.0      4.5 MB          2.39 GB
156    logind                    root       0.0      1.8 MB          2.36 GB
172    launchd                   _securitya 0.0      948 KB          2.37 GB
174    CVMCompiler               _securitya 0.0      15.1 MB         2.34 GB
180    mdworker                  _spotlight 0.0      5.7 MB          2.41 GB
182    launchd                   TorbenScha 0.1      1.5 MB          2.40 GB
185    UserEventAgent            TorbenScha 0.0      9.4 MB          2.42 GB
187    distnoted                 TorbenScha 0.1      2.6 MB          2.40 GB
188    xpchelper                 TorbenScha 0.1      5.0 MB          2.39 GB
192    Dock                      TorbenScha 0.0      36.1 MB         2.48 GB
193    talagent                  TorbenScha 0.0      7.2 MB          2.43 GB
194    SystemUIServer            TorbenScha 0.0      20.6 MB         2.52 GB
195    Finder                    TorbenScha 0.1      23.6 MB         2.47 GB
196    coreaudiod                _coreaudio 0.0      5.6 MB          2.41 GB
198    pboard                    TorbenScha 0.0      1.0 MB          2.32 GB
208    fontd                     TorbenScha 0.0      5.2 MB          2.43 GB
211    warmd_agent               TorbenScha 0.0      1.9 MB          2.38 GB
215    imagent                   TorbenScha 0.0      6.8 MB          2.41 GB
216    helpd                     TorbenScha 0.0      2.1 MB          2.38 GB
220    AirPort Base Station Agen TorbenScha 0.0      2.0 MB          2.36 GB
222    Little Snitch UIAgent     TorbenScha 0.0      5.5 MB          711.4 MB
223    Little Snitch Network Mon TorbenScha 0.1      5.9 MB          716.0 MB
235    com.apple.dock.extra      TorbenScha 0.0      12.1 MB         2.44 GB
236    cookied                   TorbenScha 0.0      2.7 MB          2.39 GB
238    gfxCardStatus             TorbenScha 0.0      11.7 MB         2.45 GB
239    NoSleepHelper             TorbenScha 0.0      8.5 MB          2.45 GB
240    BetterTouchTool           TorbenScha 0.7      14.7 MB         2.44 GB
242    NIHardwareAgent           TorbenScha 0.0      10.4 MB         681.1 MB
247    automountd                root       0.0      2.4 MB          2.39 GB
251    Quick Look Helper         TorbenScha 0.0      8.1 MB          2.91 GB
254    Activity Monitor          TorbenScha 24.0     33.2 MB         2.55 GB
263    CVMCompiler               TorbenScha 0.0      2.6 MB          2.33 GB
265    activitymonitord          root       0.8      1.3 MB          2.33 GB
266    launchdadd                root       0.0      1.8 MB          2.37 GB

That link didn't help at all.
Anyone care to help out?
I don't know what it is...I'll be using let's say Firefox, with like 10-20 tabs, be watching a youtube video in VLC player or whatever, and all of a sudden it gets sluggish - check the activity monitor, and it's the same problem...I'll restart or shut down, which sometimes helps, sometimes it boots up with the same problem, or the problem starts within 1-10minutes of me using Reaper or some other "big" program with plugins etc...but it also just happens with me using regular programs, safar/firefox etc. Might it have something to do with a background "maintenance" thing Lion starts or something like that? I've deliberately turned off indexing via terminal, so it doesn't index while I'm performing music (It would start indexing and take half a day at it, and then still do it so I finally was like, I can live without the search function...) otherwise I've had no kernel panics, no issues really with my mac and os x...

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