Webroot is using about 800-900k of RAM according to Task Manager. That seems high. Is this normal.

I'll answer my own question. Webroot has calmed down and is using only about 13k.

Hello  and Welcome to the Webroot Community Forums!
 
This is normal and very little memory consumption
 
What is the difference between my antivirus and Webroot SecureAnywhere?
• Detects, blocks and removes all infections including highly sophisticated
banking malware from your PC in the fastest possible time.
• Has an integrated Identity Shield feature that provides a secondary layer of
defence against financial and information stealing malicious software.
• Identity Shield assumes your PC may already be infected with sophisticated
and hard to detect malware such as a banking Trojan and neutralises the
threat by shutting off its data theft activities on your PC, thereby keeping your
identity and online activities secure.
• Doesn’t need virus definition updates, these go out of date within minutes.
Instead it uses the Webroot Intelligence Network (the world’s largest threat
intelligence database) to identify new files and classify threats in real time.
In this way, it identifies brand new threats in seconds, rather than hours or
days and significantly minimizes the risks posed by malware.
• It is lightweight and uses the least PC resources of any antivirus. At less than
1 megabyte in size, it’s tiny compared to conventional antivirus software that
is on average around 500 megabytes!
• It is extremely fast, according to independent tests it’s the world’s fastest
antivirus. A normal deep scan takes 1-3 minutes depending on your
machine and will not slow down your PC.