We are experiencing an issue where Machines are not booting up completely after log-in. The desktop will load but not all services or programs will load (such as Microsoft Lync, Anti-virus, network drives, etc). In these instances a reboot will typically solve the problem but it often times takes more than one reboot. It is happening on multiple machines and the issue has seemed to increase since adding docking stations (port replicators) for many of the laptops. Booting off of a docking station will usually solve the issue but the issue has been experienced without a docking station and on desktops. Majority of the machine are Dell 6420's and 6430's.