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I've been working with ubuntu 12.04 for more than a year and I just can't find a solution for my battery shortness anywhere.

I have dell m4500 - i7, 8 G ram (if you need any more details just say).

In powertop on idle I have something like ~800 wakeups/second. (In a good day)

After 5-10 minutes of using (even idle) it shutdown.

help?

(I have conky & compiz, but I don't think that they are the main problem)

EDIT: Answers to questions I saw in different posts:

I have jupiter 0.1.9

On Windows the battery life time was much better.

I changed "bad" into "good" in powertop, no success there.

In Power Statistics I have more than 2000 processor wakeups\second

I have noticed : Capacity : 51.2% Energy: 30.9Wh Energy(design): 62.2Wh.

POWERTOP: (it is normal?)

Summary: 829.6 wakeups/second,  0.0 GPU ops/second and 0.0 VFS ops/sec
Power est.      Usage       Events/s    Category       Description
  3.58 W     53.3%                      Device         Display backlight
  2.05 W    100.0%                      Device         Radio device: dell
  2.02 W     27.4 ms/s     112.9        Process        /usr/lib/firefox/f
  2.01 W      2.3 ms/s     112.4        Interrupt      PS/2 Touchpad / Ke
  1.96 W     31.1 ms/s     110.0        Process        /usr/bin/X :0 -aut
  1.64 W     20.5 ms/s      91.8        Process        nvidia-settings
  1.59 W      1.5 ms/s      89.3        Timer          hrtimer_wakeup
  1.15 W      3.5 ms/s      64.2        Process        /usr/lib/firefox/p
  810 mW     10.3 ms/s      45.4        Process        conky
  772 mW      0.8 ms/s      43.3        Timer          tick_sched_timer
  580 mW     10.2 ms/s      32.5        Process        compiz
  452 mW    100.0%                      Device         Radio device: dell
  381 mW    100.0%                      Device         Radio device: iwlw
  163 mW      5.4 ms/s       9.1        Process        sh
  157 mW      6.1 ms/s       8.8        Interrupt      [6] tasklet(softir
  141 mW      0.8 ms/s       7.9        Process        dconf worker
  137 mW      0.9 ms/s       7.7        Process        /usr/lib/gnome-set
  136 mW    582.8 µs/s       7.6        Process        /usr/bin/gtk-windo
  107 mW    532.3 µs/s       6.0        Interrupt      [9] RCU(softirq)
 90.8 mW      1.2 ms/s       5.1        Process        prosvc
 84.5 mW      1.3 ms/s       4.7        Process        gdbus
 81.0 mW     52.6 pkts/s                Device         Network interface:
 78.3 mW      2.4 ms/s       4.4        Process        //bin/dbus-daemon
 78.3 mW    132.2 µs/s       4.4        Process        syndaemon -i 2.0 -
 71.2 mW     67.1 µs/s       4.0        kWork          ieee80211_iface_wo
 53.4 mW     72.6 µs/s       3.0        Process        [ksoftirqd/4]
 52.5 mW    431.2 µs/s       2.9        Interrupt      [7] sched(softirq)
 42.7 mW    668.9 µs/s       2.4        Process        /usr/lib/zeitgeist
 39.2 mW     51.5 µs/s       2.2        Process        nginx: worker proc
 38.3 mW    316.4 µs/s       2.1        Process        gnome-screensaver
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