Components Of the Sidebar
This is one of the disappointments of build 4051 if you ask me. Microsoft seriously downsized the amount of tiles available, theres only 5 tiles in this build.
Clock Tile - The analog clock that we've seen in 4029, although its been redesigned slightly. It looks alot better and now has the "digital time" (EG: 5:23PM) and the date below it.
Quick Launch - Displays the items in your Quick Launch. Slightly redesigned, no longer has the names by the items.
Classic Tray Tile - Displays the System Tray. Some icons may not appear correctly or at all. You can access them by clicking on the tile itself, which will display a list of the tray icons. (Note: It doesn't seem to refresh well)
Slide Show Tile - display a picture slideshow on the sidebar, cool if you're bored and need something to stare at. Seems to only display the contents of My Pictures and is not customizable in this build.
Sync - Used for file syncronization. Requires WinFS
Changes Over Build 4029
Welcome screen is similar to 4029 but now sports black as the color of choice to match the new Slate theme.
The setup routine has been redone for this build and is much nicer than previous builds.
New Slate theme included in this build, Plex is gone for good.
Carousel view in Hardware and Devices has been removed.
New sidebar clock design yet again.
Preview pane polished but still somewhat slow.
Download manager in Internet Explorer works intermittently (reported by numorous people that it works on and off or not at all)
Popup blocker in Internet Explorer improved, works very nicely.
New boot screen (Looks a bit weird).
Bugs and Known Issues in 4051
Explorer is still leaky with the sidebar on (see below). Classic Tray tile seems to be the main cause of the leak.
In Outlook 2003 when you click Personal Folders it displays the html code instead of Outlook Today.
Network Browsing is broken by default. See "Repair Longhorns Networking" later on in this guide.
Internet Explorer's download manager is flakey. Sometimes it work, sometimes it doesn't.
If a menu overlaps the sidebar, it may remove the sidebar gredient from the overlapped area. To fix this, just resize another tile over the missing gredient area and things should return to normal.
If Windows Explorer or Internet Explorer lock up, you will get a glimpse of where the original titlebar (from previous windows versions) is in Explorer.
The TCP/IP Stack in Longhorn 4051 is completely rewritten. Microsoft messed up the internet routing portion so if you set a static IP the Internet dies. See below for a workaround.
Because of the bug mentioned above, your internet connection may run a bit slower under Longhorn (well it does for me at least, i have 10mbit download and get 6mbit in LH)