So we should all be familiar with the nice little bug where certain activities cause the vista network stack to throttle gigabit networks down to 100 megabit. Well I have good news (sort of); we have a fix for it. It was kindly posted for everyone over at The Inquirer.
Now comes the bad news. The throttle appears to have been put there as a workaround for caching issues in Vista. As you can see below, large files can no longer copy across the network despite my system having 4GB of RAM. So the fix does its job. However, you should probably hold off on using it as this so-called fix doesn't target the larger issue. The larger issue, of course, is that caching across the network DOES NOT WORK. This fix does nothing more than aid smaller file transfers while sacrificing the ability to transfer larger files, as seen below.
The only way a true fix can be implemented is via a hotfix, which doesn't exist yet and may never exist.Microsoft, Windows Vista, Tips and Tricks, Network Throttling, Troubleshooting, Knowledgebase