I'm building myself a new system and after using a competitor's product for years, wanted to try ESET ISS 6 a go after hearing so many good things about it. The webdownload (trial) has been absolutely superb and I love the control it allows me. Except for one issue: it's unusable. I cannot complete downloads of a decent size, because ISS seemingly randomly blocks the traffic, which it does, according to the log file, because "no application listening on the port". This is most problematic, since it happens for HTTP downloads from websites, including my work webserver, as well as for Usenet downloads. At these event, the logfile explodes with many DOZENS 'no application listening on the port' event, showing proudly how 184.108.40.206:563 (made up IP) was blocked from its target, my machine at 192.168.222.222:50234, 192.168.222.222:50233 and 192.168.222.222:50235. A second later, all is back to normal. This is not a huge problem for Usenet connections or websurfing, as downloads will restart or will be resumed. Downloading a file from a website (say, a new ESET ISS trial... ) wouldn't work, as every 30-100MB one of these blocking bonanzas happens. This is what it looks like: http://i.imgur.com/CUcd7jD.png Does anyone have a clue how to make this workable? I'd hate to go look for another firewall, as ISS does -essentially...- everything I want.