you will see slow speeds booting from USB by the nature of how USB functions, but I don't know if 2 minutes is normal. try using a liveUSB and see if...
Do you have lxpanel? What do you mean by "LXDE (Lubuntu)"? Have you actually installed Lubuntu or are you picking up bits and pieces of LXDE/Lubuntu...
Maybe you have selected Lubuntu Netbook at the login screen. In that case you can log out (or reboot) and select another desktop session, for example...
1st Distro used: Knoppix in early 2007 ¦ 1st Distro Installed: Ubuntu 7.10 in Feb 2008
GNU/Linux User #470660 – Ubuntu User #28226
Isaac Asimov: "I do not fear computers. I fear the lack of them."