Mavericks MacBook Pro Battery Draining

Question

Hello,
I recently installed Mavericks onto my Macbook Pro about a week back.
I find that the battery drains very quickly; in general it only shows an estimate of less than 3.5 hours with just Safari open. Before it used to be 8-9hours+.
What is going on? Why is my computer showing a decrease in battery life when Mavericks is supposed to increase it dramatically?
Typing this message in a span of 10 minutes already dropped my battery life around 1-2%. (No hardware problems; flawless on Mountain Lion)
Thanks,
Socialgenie
Pasting the Etrecheck report below:
Charge Information:
  Charge Remaining (mAh): 4720
  Fully Charged: Yes
  Charging: No
  Full Charge Capacity (mAh): 4947
  Health Information:
  Cycle Count: 55
  Condition: Normal
Hardware Information:
          MacBook Pro - model: MacBookPro9,2
          1 2.5 GHz Intel Core i5 CPU: 2 cores
          4 GB RAM
Video Information:
          Intel HD Graphics 4000 - VRAM: 1024 MB
Audio Plug-ins:
          BluetoothAudioPlugIn: Version: 1.0
          AirPlay: Version: 1.9
          AppleAVBAudio: Version: 2.0.0
          iSightAudio: Version: 7.7.3
Startup Items:
          ChmodBPF - Path: /Library/StartupItems/ChmodBPF
System Software:
          OS X 10.9 (13A603) - Uptime: 0 days 0:56:27
Disk Information:
          APPLE HDD TOSHIBA MK5065GSXF disk0 : (500.11 GB)
                    EFI (disk0s1) <not mounted>: 209.7 MB
                    Macintosh HD (disk0s2) /: 499.25 GB (90.71 GB free)
                    Recovery HD (disk0s3) <not mounted>: 650 MB
          MATSHITADVD-R   UJ-8A8 
USB Information:
          Apple Inc. FaceTime HD Camera (Built-in)
          Logitech USB Receiver
          Seagate  Portable         1 TB
                    Expansion Drive (disk1s1) /Volumes/Expansion Drive: 1 TB (164.51 GB free)
          Apple Computer, Inc. IR Receiver
          Apple Inc. Apple Internal Keyboard / Trackpad
          Apple Inc. BRCM20702 Hub
                    Apple Inc. Bluetooth USB Host Controller
FireWire Information:
Thunderbolt Information:
          Apple Inc. thunderbolt_bus
Kernel Extensions:
          at.obdev.nke.LittleSnitch          (4052)
          com.github.osxfuse.filesystems.osxfusefs          (2.5.4)
          net.semaja2.kext.insomnia          (2.1.2)
Problem System Launch Daemons:
Problem System Launch Agents:
Launch Daemons:
          [loaded] at.obdev.littlesnitchd.plist
          [loaded] com.adobe.fpsaud.plist
          [loaded] com.github.GitHub.GHInstallCLI.plist
          [loaded] com.google.keystone.daemon.plist
          [loaded] org.macosforge.xquartz.privileged_startx.plist
Launch Agents:
          [loaded] at.obdev.LittleSnitchUIAgent.plist
          [loaded] com.google.keystone.agent.plist
          [loaded] org.macosforge.xquartz.startx.plist
User Launch Agents:
          [loaded] com.BlueStacks.AppPlayer.LogRotator.plist
          [loaded] com.BlueStacks.AppPlayer.Service.plist
          [loaded] com.BlueStacks.AppPlayer.UninstallAgent.plist
          [loaded] com.BlueStacks.AppPlayer.UpdaterAgent.plist
          [failed] com.facebook.videochat.[redacted].plist
User Login Items:
          uHD-Agent
          Flux
          Flux
          iTunesHelper
          gfxCardStatus
          Insomnia
          Google Chrome
3rd Party Preference Panes:
          Flash Player
          Flip4Mac WMV
          FUSE for OS X (OSXFUSE)
          Java
          MacFUSE
          NTFS-3G
Internet Plug-ins:
          Default Browser.plugin
          DirectorShockwave.plugin
          Flash Player.plugin
          FlashPlayer-10.6.plugin
          Flip4Mac WMV Plugin.plugin
          googletalkbrowserplugin.plugin
          JavaAppletPlugin.plugin
          npgtpo3dautoplugin.plugin
          o1dbrowserplugin.plugin
          QuickTime Plugin.plugin
          Unity Web Player.plugin
User Internet Plug-ins:
          BlueStacks Install Detector.plugin
Bad Fonts:
          None
Time Machine:
          Time Machine not configured!
Top Processes by CPU:
               3%          ntfs-3g
               3%          WindowServer
               1%          Little Snitch Agent
               1%          Little Snitch Network Monitor
               1%          EtreCheck
               1%          fontd
               0%          Dock
               0%          Google Chrome
               0%          opendirectoryd
Top Processes by Memory:
          180 MB             Google Chrome
          168 MB             Finder
          139 MB             mds_stores
          119 MB             com.apple.IconServicesAgent
          86 MB              systemstats
          82 MB              com.apple.ShareKitHelper
          61 MB              System Information
          59 MB              Google Chrome Helper
          57 MB              WindowServer
Virtual Memory Statistics:
          204 MB             Free RAM
          1.66 GB            Active RAM
          1.53 GB            Inactive RAM
          622 MB             Wired RAM
          888 MB             Page-ins
          0 B                Page-outs

Answer 1

Please read this whole message carefully, especially the warnings, before doing anything.
1. I can only guess which of the modifications you've made to your system is causing the problem. The changes suggested here should be considered provisional; they may not help, or they may remove functionality that you find useful. If a third-party system modification that you want to keep is at fault, refer to its developer for support.
2. WARNING: Back up all data now if you haven’t already done so. Before proceeding, you must be sure you can restore your system to its present state, even if it becomes unbootable. If you’re not sure you can do that, STOP — DON’T CHANGE ANYTHING.
If you don't like the results of the procedure suggested below, restore from your backup.
I will not be responsible for the consequences, and I will not be able to help, if you ignore this warning.
3. You should either remove or update the following system modification(s), if an update is available from the developer:
[Not applicable]
and definitely remove at least the following:
LittleSnitch
InsomniaX
4. Whatever you remove must be removed completely, and (unless otherwise specified in this message) the only way to do that is to use the uninstallation tool, if any, provided by the third-party developers, or to follow their instructions. If the software has been incompletely removed, you may have to re-download or even reinstall it in order to finish the job. I can't be more specific, because I don't install such things myself. Please do your own research.
Here are some general guidelines to get you started. Suppose you want to remove something called “BrickMyMac” (a hypothetical example.) First, consult the product's Help menu, if there is one, for instructions. Finding none there, look on the developer's website, say www.brickmymac.com. (That may not be the actual name of the site; if necessary, search the web for the product name.) If you don’t find anything on the website or in your search, contact the developer. While you're waiting for a response, download BrickMyMac.dmg and open it. There may be an application in there such as “Uninstall BrickMyMac.” If not, open “BrickMyMac.pkg” and look for an Uninstall button.
Again, please don't ask me to do this research for you. You can do it better than I can, because I don't use the product and I may not even know what it is.
You will generally have to reboot after uninstalling a system modification. Until you do that, the uninstallation may have no effect, or unpredictable effects.
5. If you can’t remove software in any other way, you’ll have to erase and install OS X. Never install any third-party software unless you're sure you know how to uninstall it; otherwise you may create problems that are very hard to solve.
WARNING: Trying to remove complex system modifications by hunting for files by name often will not work and may make the problem worse. The same goes for "utilities" such as "AppCleaner" and the like that purport to remove software.
6. I recommend that you never reinstall the modifications marked with a dagger (†) above, if any. If your problem is resolved after uninstalling all the above modifications and rebooting, but you still want to use some of those not marked with a dagger, you can experiment with putting them back, one at a time, testing carefully after each step. Keep in mind that system modifications may be incompatible with each other or with future OS X updates, so it may not be clear which one is at fault.
7. If you still have problems after making the suggested changes and rebooting, post again. Remember: if you don’t like the results of this procedure, you can undo it by restoring from the last backup you made before you started.
This procedure will unlock all your user files (not system files) and reset their ownership and access-control lists to the default. If you've set special values for those attributes on any of your files, they will be reverted. In that case, either stop here, or be prepared to recreate the settings if necessary. Do so only after verifying that those settings didn't cause the problem. If none of this is meaningful to you, you don't need to worry about it.
Step 1
If you have more than one user account, and the one in question is not an administrator account, then temporarily promote it to administrator status in the Users & Groups preference pane. To do that, unlock the preference pane using the credentials of an administrator, check the box marked Allow user to administer this computer, then reboot. You can demote the problem account back to standard status when this step has been completed.
Enter the following command in the Terminal window in the same way as before (triple-click, copy, and paste):
{ sudo chflags -R nouchg,nouappnd ~ $TMPDIR.. ; sudo chown -R $UID:staff ~ $_ ; sudo chmod -R u+rwX ~ $_ ; chmod -R -N ~ $_ ; } 2> /dev/null
This time you'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning to be careful. If you don’t have a login password, you’ll need to set one before you can run the command. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator.
The command may take several minutes to run, depending on how many files you have. Wait for a new line ending in a dollar sign (“$”) to appear, then quit Terminal.
Step 2 (optional)
Take this step only if you have trouble with Step 1 or if it doesn't solve the problem.
Boot into Recovery. When the OS X Utilities screen appears, select
Utilities ▹ Terminal
from the menu bar. A Terminal window will open. In that window, type this:
res
Press the tab key. The partial command you typed will automatically be completed to this:
resetpassword
Press return. A Reset Password window will open. You’re not  going to reset a password.
Select your startup volume ("Macintosh HD," unless you gave it a different name) if not already selected.
Select your username from the menu labeled Select the user account if not already selected.
Under Reset Home Directory Permissions and ACLs, click the Reset button.
Select
 ▹ Restart
from the menu bar.