I noticed two weeks ago that I had over 50% of the partition was free. Yesterday I had 4GB free.
I didn't have time to investigate so yesterday I removed the second partition and expand the first one. So now I have 250 GB free. Today I discovered that I had only 119GB free.
I currently have Superantispyware, Malwarebytes, AVAST and ZoneAlarm. The scanners are finding some things but nothing big.
Any suggestions or comments are greatly appreciated!