Security Essentials: How long may a ‘quick scan’ take?

Being in the official Microsoft Security Essentials beta, I am using this anti-virus solution in my production environment. This morning, its icon in the system notification area turned yellow, and the software alerted me that a system scan has not been run for some time. Security Essentials offered me to do the scan instantly, and considering that it was labeled to be a ‘Quick scan’, I figured out that it would not take too long to finish. Yet, have a look at the following screenshot I took when the scan was at about 50%:

Do you agree with me that a ‘Quick scan’ should not take 14 minutes for running halfway through?