Every time when I download larger files (over 100 MB) around 110-140 I got a "unknown network error" and all the d/l's stops. I tried Chrome, IE and Firefox to same result. Only after disabling the firewall, the d/l's were able to complete succesfully. I reverted to the version 4 and the behaviour persists. I previously used previous version for years with no problem. As soon as I disable the firewall from ESET all works well. The lame firewall from Windows doesn't produce the problem either, only ESET. Anyone knows about a quickfix of this issue ? Someone suggested on a different generic forum something along "Upon careful investigation, it was found that the anti-virus's HTTP checking (port checking) option was responsible. Disabling this option permanently fixes the network error thing. Since only HTTP/Port-checking is disabled the anti-virus should still work normally" but I wouldn't know how to do the same with ESET. Thanks if you got any ideeas. A. PS As my luck goes, I just paid for another 2 years of updates, just before the annoying issue showed up.