A few helpful tips:

avoid Windows Explorer to display the details of AVI-files:
Delete the value of this registry key:

Configure Internet Explorer to have more than 2 simultaneous download sessions:

source: MS-Knowlegde base 282402:

  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
  • On the Edit menu, click Add Value (DWORD) , and then add the following registry values: