My Mac mini no longer detects my monitor resolution

My Mac Mini has stopped being able to detect the resolution of my monitor, which is a 1680x1050 Acer widescreen. 1680x1050 is also no longer a choice of resolutions under 'Displays' in 'System Preferences' so I cannot select my monitor resolution manually. I suspect that there is a bug somewhere in a recent update which has broken support for my monitor. Is there an official channel by which I can report this bug? Has it been reported already? Is there an ETA on a fix? This renders my Mac more or less unusable.
Here's some info about what I'm running:
Hardware Overview:
Model Name:          Mac mini
Model Identifier:          Macmini3,1
Processor Name:          Intel Core 2 Duo
Processor Speed:          2.26 GHz
Number Of Processors:          1
Total Number Of Cores:          2
L2 Cache:          3 MB
Memory:          4 GB
Bus Speed:          1.07 GHz
Boot ROM Version:          MM31.0081.B06
SMC Version (system):          1.35f0
NVIDIA GeForce 9400:
Chipset Model:          NVIDIA GeForce 9400
Type:          GPU
Bus:          PCI
VRAM (Total):          256 MB
Vendor:          NVIDIA (0x10de)
Device ID:          0x0861
Revision ID:          0x00b1
ROM Revision:          3362
Displays:
VGA Display:
Resolution:          800 x 600 @ 60 Hz
Pixel Depth:          32-Bit Color (ARGB8888)
Main Display:          Yes
Mirror:          Off
Online:          Yes
Rotation:          Supported
Display Connector:
Status:          No Display Connected (Ed: There is definitely a display connected. I'm using it to file this report.)
System Software Overview:
System Version:          Mac OS X 10.6.8 (10K549)
Kernel Version:          Darwin 10.8.0
Boot Volume:          Macintosh HD
Boot Mode:          Normal
Computer Name:          siracusa
User Name:          Christopher Rossi (chris)
Secure Virtual Memory:          Not Enabled
64-bit Kernel and Extensions:          No
Time since boot:          4:52

It's unlikely that the upgrades had anything to do with the problem, slim superdrives are just not all that reliable.
You might try a few tricks before taking it in for service or springing for a Mac compatable external DVD drive.
1. Reset the SMC > Resetting the System Management Controller
2. Reset the PRAM > Resetting your Mac's PRAM and NVRAM
3. Clean it, for example with a > Memorex OptiDisc CD/DVD Laser Lens Cleaner

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