Resolution problems with Samsung monitor

I recently purchased a Samsung Syncmaster 19" TV/monitor for use with my MacBook while at university. The monitor's resolution is 1440x900, and my macbook correctly chooses this resolution when plugged in.
My understanding was that when using a larger monitor, the proportions of OS X remain the same, you just have more screen space for windows.
However, while having slightly more screen space, everything is displayed slightly larger than normal. For instance, the menu bar and window option lights in the top-left corner are all larger, which is like running a resolution which is too low.
I am running a 2.16 MacBook, connected to the external display with a mini-dvi to dvi connector.
Is there any way to solve this?
Thanks in advance.

There has been some issues using external monitors with Macbook Pros since 10.5.2 came out. I am one of the many. Check previous posts regarding this issue.

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Hi there merticlese,
I would recommend resetting the PRAM and SMC as an initial troubleshooting step. Take a look at the articles below for more information.
About NVRAM and PRAM
http://support.apple.com/kb/HT1379
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/HT3964
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I just installed Arch 2008.04-RC last night. I configured xorg.conf using nvidia with the screen resolution set to "1440x900" which worked in both the X Windows and KDE 3.5.9.
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(II) VESA(0): Not using mode "1280x1024" (no mode of this name)
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(**) VESA(0): *Built-in mode "800x600"
(**) VESA(0): Built-in mode "640x480"
(**) VESA(0): Built-in mode "640x400"
(**) VESA(0): Built-in mode "320x400"
(**) VESA(0): Built-in mode "320x240"
(**) VESA(0): Built-in mode "320x200"
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Section "ServerLayout"
Identifier "Default Layout"
screen "Default Screen" 0 0
Inputdevice "Generic Keyboard"
Inputdevice "Configured Mouse"
EndSection
Section "Files"
EndSection
Section "Module"
Load "glx"
EndSection
Section "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection
Section "InputDevice"
Identifier "Configured Mouse"
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Option "Protocol" "ImPS/2"
Option "ZAxisMapping" "4 5"
Option "Emulate3Buttons" "true"
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Section "Monitor"
Identifier "Generic Monitor"
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Option "DPMS"
EndSection
Section "Device"
Identifier "nVidia Corporation G70 [GeForce 7300 GT]"
Driver "vesa"
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Option "AddARGBGLXVisuals" "True"
Option "NoLogo" "True"
EndSection
Section "Screen"
Identifier "Default Screen"
Device "nVidia Corporation G70 [GeForce 7300 GT]"
Monitor "Generic Monitor"
Defaultdepth 24
Option "AddARGBVisuals" "True"
Option "NoLogo" "True"
Option "AddARGBGLXVisuals" "True"
Option "UseEdidDpi" "false"
Option "DPI" "96 x 96"
Option "ConnectedMonitor" "DFP"
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1440x900" "1280x1024" "1024x768" "800x600"
EndSubSection
EndSection
Section "Extensions"
Option "Composite" "Enable"
EndSection
I am at a loss at trying to fix this one. Something similar happened when I was running Gentoo on this same desktop back in April. I also have the same low resolution problem when using Sabayon.
Any help here would be much appreciated :-)

I thought these frequencies were a bit low too. My manual said there were the frequencies. I checked online and it said the same. I need to do more research on it.
I did manage to get my 1440x900 resolution back using the open source nv drivers. I had to do the same with Gentoo and Linux Mint in the past. Everytime I used the nvidia drivers, my monitor returns to the 640x400 resolution and I noticed the only way to avoid it was to use nv. I do not play games online or use Compiz so it does not bother me.
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