In the past 24 hours, when web browsing I've had web pages randomly fail to load, due to an inability to connect to the server. I've experienced this across multiple browsers (Chrome, Firefox, Safari/Win). I'm pretty sure I ruled out DNS as a culprit as well, since I tried my ISP's DNS and also OpenDNS. After disabling the Firewall component of McAfee SecurityCenter, however, the problem goes away. I'm wondering if it's somehow interfering with my network traffic.
For the sake of completeness, I'm also experiencing the "service host has encountered a problem and must close" error discussed elsewhere (https://community.mcafee.com/message/231002), no idea if it's related.
Is this a known issue in the past couple days? Thanks.