For some stupid reason, the App. Manager only shows *.jar applications you've installed and not your *.sis
And the rest of your missing space is probably being used by registry and useless data.
USELESS DATA!!! [I recently wrote a post expressing i was on a quest against the affor mentioned dirt] Where abouts do you know anyuseless data coagulates?
Most of the useless data I've found were to be in C: root folder. But be careful not to delete a component of an application is installed. You can delete components of the applications that you've removed.
I had the trial version of Handy Safe. after finding it wasn't of any use to me, I deleted it. Using a file manager, I found that a Handy Safe component was still in my C:root folder taking up 16kb (the little bastard)
SonyEricsson P800 with 128Mb/Nokia 7650/Sony Vaio PCGV505P/Sony Clie PEGNZ90G = Answers to life's questions