When you fix items with Ad-Aware SE it does not automatically delete them. It adds them to a quarantine file that takes up hard drive space. It can be a good idea to get rid of them. However, it is always a good idea to use your computer for some time to make sure any of the items you have quarantined did not change the functionality of any programs that you need to use, before you delete them.

Click on Open Quarantine List

The following screen will appear

Select the quarantine file that you wish to delete.
Click the delete key.