c:\docume~1\owner\locals~1\temp\~5m10877\symant~1.msi\
You can also do this to clean out your temp files.
Go to Start | Programs | Accessories | System Tools | Disk Cleanup
Then remove all of the temporary files.
Here is a good tutorial on this:
http://www.theeldergeek.com/disk_cleanup_utility.htm
Thanks,
rstones12