Originally Posted by registry_tweaker

Here's a great tip to speed up your browsing on Windows XP machines. Its actually created to fix the bug installed as default in Windows 2000 that scans shared files for Scheduled Tasks. And it turns out that you can experience a slow response as long as 30 seconds when you try to view shared files across a network because Windows 2000 is using the extra time to search the remote computer for any Scheduled Tasks. Note that this fix is originally intended for only those affected, Windows 2000 users will experience that the actual browsing speed of both the Internet & Windows Explorers improve significantly after applying it since it doesn't search for Scheduled Tasks anymore. Here's how :

Open up the Registry and go to :
HKEY_L0CAL_MACHINE/Sftware/Microsoft/Windows/Current Version/Explorer/RemoteComputer/NameSpace
Under that branch, select the key :
{D6277990-4C6A-11CF-8D87-00AA0060F5BF}
and delete it.
This is key that commands Windows to search for Scheduled Tasks. If you like you may try exporting the exact branch so that you can restore the key if necessary.
This fix is so effective that it doesn't require a restart and you can almost immediately determine yourself how much it speeds up your browsing processes.