It is important for a user to have the ability to run scans on the fly in case a potential infection occurs during normal use of the computer. Although the IS Pro 09 scans are quite bloated in there memory usage, taking up 22 megabytes on top of the average 33 megabytes to run the live protection, they are also quite fast. The quick scan only hits folders that are highly targeted by malware and is done in about five minutes. The full system scan, hitting all folders on the main drive, is done in about forty-five minutes. This is of course partially dependent upon the size of the drive and the amount of files present. These quick scans are a huge plus, enabling users to prevent problems by making reaction quick and easy.