Ubuntu 12.04 LTS Windows Snap Feature

[Vesnog]

Greetings,

When I first installed Ubuntu 12.04 LTS 32.bit from a Live-CD without internet connection and any updates the snapping feature worked fine for windows of all applications. However, after some updates and installations it stopped working. I can no longer drag a window to the edge of the screen and have it resized. Thinking the problem is from my lack of experience I did a clean install of Ubuntu 12.04 again with internet connection; however, the problem still persists and I am fed up with this. Do you have any suggestions for remedy? Thanks in advance.

P.S: The feature when working properly was just like that in Windows 7. I am a new user BTW so I might be skipping some important details, and I would be glad if you can remind me of them. In addition to that when I drag a tab in Google Chrome it just opens it in a new window instead of replacing it. How can I change this situation?

[Vesnog]

I am posting some information which might be related with the problem:

@Vesnog:~$ dpkg-query -l nvidia*
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name           Version        Description
+++-==============-==============-============================================
un  nvidia-180-mod <none>         (no description available)
un  nvidia-185-mod <none>         (no description available)
ii  nvidia-common  1:0.2.44.2     Find obsolete NVIDIA drivers
ii  nvidia-current 304.51-0ubuntu NVIDIA binary Xorg driver, kernel module and
un  nvidia-current <none>         (no description available)
ii  nvidia-current 295.49-0ubuntu NVIDIA binary Xorg driver, kernel module and
ii  nvidia-setting 304.51-0ubuntu Tool of configuring the NVIDIA graphics driv
ii  nvidia-setting 295.33-0ubuntu Tool of configuring the NVIDIA graphics driv

The part of the output of the command "sudo lspci -v" is as follows:

01:00.0 VGA compatible controller: NVIDIA Corporation GF108 [GeForce GT 540M] (rev a1) (prog-if 00 [VGA controller])
    Subsystem: Dell Device 050e
    Flags: bus master, fast devsel, latency 0, IRQ 16
    Memory at f0000000 (32-bit, non-prefetchable) [size=16M]
    Memory at c0000000 (64-bit, prefetchable) [size=256M]
    Memory at d0000000 (64-bit, prefetchable) [size=32M]
    I/O ports at 3000 [size=128]
    Expansion ROM at f1000000 [disabled] [size=512K]
    Capabilities: [60] Power Management version 3
    Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
    Capabilities: [78] Express Endpoint, MSI 00
    Capabilities: [b4] Vendor Specific Information: Len=14 <?>
    Capabilities: [100] Virtual Channel
    Capabilities: [128] Power Budgeting <?>
    Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?>
    Kernel driver in use: nvidia
    Kernel modules: nvidia_current_updates, nvidia, nouveau, nvidiafb