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Considering you have a 3GS, I don't think Free Memory is necessary anymore. Just saying.
 
3GS

Wired 40mb
Active 56mb
Inactive 72mb
Free 6mb

Total = 174mb

I thought it was 256mb? Is iStat wrong?

what is iStat supposed to display?
it may only be displaying what is available for 3rd party apps, which would never be the full 256mb
 
Hotsnowboarder: Did you jailbreak your device? If you do, install SBSettings & press the respring button if it run out of free memory. Or Just reboot the iPhone to clear the memory.

For me on my 3GS,


I got total of 230mb. (free, inactive, active, wired)
 
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