Increased program memory usage and decreased system performance using ESET Smart Security on Windows 7 and Windows Server 2008 R2KB Solution ID: KB2398|Last Revised: September 9, 2014
Microsoft has notified software vendors that a hotfix is now available for Windows 7 and Windows Server 2008 R2 to resolve a memory leak in Windows Filtering Platform (WFP). WFP is a technology Microsoft provides to developers of network, security and utility software for monitoring network traffic.
Some customers using ESET Smart Security on Windows 7 or Server 2008 R2 may see an increase in program memory usage over time resulting in decreased system performance. The impact of this issue on clients is difficult to determine because it is based on the type and amount of network traffic performed, which varies from customer to customer.
A detailed description of the problem can be found in Microsoft Knowledge Base article #979223, "A nonpaged pool memory leak occurs when you use a WFP callout driver in Windows 7 or in Windows Server 2008 R2."
The hotfix can be requested from the following Microsoft support page: http://support.microsoft.com/hotfix/KBHotfix.aspx?kbnum=979223&kbln=en-us
Click Show hotfixes for all platforms and languages on the web page and select the hotfix available for your platform.
ESET recommends customers request this hotfix from Microsoft and deploy it as soon as possible after verifying compatibility with their operating environments.