Link seems to work just fine. More information. This is tcpip.sys limit fix. Helps some people with torrent speed etc Quick quote from google: What's this EventID 4226? The EventID 4226 means, that there are to many concurrent TCP connection attempts. A connection attemp is a query to a computer, if it accept the TCP connection or not. If the computer is for example no more existent, it will be waited for a few seconds, until a timeout occurs and the connection attemp get canceled. Since XP SP2 there are only 10 concurrent TCP connection attempts possible, while in SP1 it has not been limited. Which effects does this limit have? Applications with many connection attemps may work bad or not at all. Even web browsers, eMail clients or antivir programs can be affected and might bring a long time of waiting. Also administrative diagnosticprograms in companies make problem. In short, there seems to be more problems than there is an advantage. How can I find out, if I'm affected? Just have a look at Start/Maintenance/Control Panel/Administration Management/Eventview/System if there are entries with the event id 4226. If yes, minimum one time the limit has been reached