Question : SBS 2008 Disk Full

I have SBS 2008 installed on a machine with the following:
c:\ 136 GB Total
D:\ 273 GB Total

For some reason it showed that I only had 2 GB space free so i moved a bunch of files.  Now I have 34.4 GB free space but for the life of me I cannot figure out where the rest of the space is located.  I have attached the output of my screen shot of disk usage using DIRUSE and treesizefree.  I am using 12.5 GB for my pagefile so this doesn't add up.

Thank you in advance...

Answer : SBS 2008 Disk Full

Ok I was able to find the culprit.  Background scanning was enabled for Kaspersky 6.0 for Microsoft Exchange Server 2007 and logging set to write every 30 days.  The logging once every 30 days is fine but the background scanning caused huge amount of data to be written to the log file.  Once I turned off the background scanning, the log files reduced dramatically in size.