So glad I'm not the only one having this problem! I have Malwarebytes installed on several computers and they've all been popping up these IP Blocks since yesterday. Malwarebytes logs show multiple blocks, all through different ports. Computers with Malwarebytes + Avira Anti-Virus shows: IP-BLOCK 50.97.214.162 (Type: outgoing, Port: 49248, Process: chrome.exe) IP-BLOCK 50.97.218.220 (Type: outgoing, Port: 49440, Process: chrome.exe) IP-BLOCK 50.97.214.162 (Type: outgoing, Port: 49727, Process: chrome.exe) ~Basically shows from whatever browser being used (Chrome, Firefox, or Opera) Computers with Malwarebytes + Avast Anti-Virus shows: IP-BLOCK 50.23.124.152 (Type: outgoing, Port: 52203, Process: avastsvc.exe) IP-BLOCK 50.97.218.220 (Type: outgoing, Port: 53363, Process: avastsvc.exe) IP-BLOCK 50.23.124.152 (Type: outgoing, Port: 53836, Process: avastsvc.exe) IP-BLOCK 50.97.218.220 (Type: outgoing, Port: 51471, Process: avastsvc.exe) ~Any browser shows Avast since it scans all traffic Even my work netbook is getting them to. Drove me crazy thinking my home network had something... Yesterday I fully scanned my main computer in Safemode with Malwarebytes + Avast and came up clean. Also spent all night using Avast to Boot Scan, also nothing. Tried DNS Flushes in CMD, CCleaner, and even tried Malwarebytes Anti-Rootkit program, nothing as well. IP Block Popup can be reproduced practically 90% of the time at http://gamefaqs.com; which never happened before yesterday - I'm pretty sure it's some of the flash ads hosted on SoftLayer since even Yahoo Mail gets the IP Block popups when certain ads show.