Hello,
my DockStar doesn't boot Debian from the USB-Stick. I already have installed the new uBoot from Jeff some time ago, so I don't hope that this is a problem.

cd /tmp wget http://jeff.doozan.com/debian/uboot/install_uboot_mtd3.sh chmod +x install_uboot_mtd3.sh ./install_uboot_mtd3.sh

So, this is what I've done in my last installation:
1. I formated the USB-Stick correctly
http://img829.imageshack.us/i/cfdiskusbstick.jpg/
http://img713.imageshack.us/i/catdiskstats.jpg/ (after installation)

2. I installed Debian with the following instruction:
http://jeff.doozan.com/debian/install_lenny.htm

And there always different thinks that happen after a reboot (put off the power for a few seconds and plug it in again):
1. led start blinking green
2. led starts blinking yellow and the usb-stickes starts blinking for a few seconds
or
1. led starts blinking green
2. led stops blinking and the usb-stick starts blinking
3. nothing blinks for about one minute
4. led starts blinking green
5. led starts blinking yellow
6. after a few seconds, the usb stick also start blinking for a few seconds
7. led still blinks yellow fot the rest of the time

And that's it, but there are also some other combinations of blinking. And when I connect me via SSH to the Dockstar, I always see that the DockStar booted up Pogoplug.

Here are some extra information:
http://img825.imageshack.us/i/dockstar.jpg/

Pogoplug:~$ fw_printenv
bootcmd=run bootcmd_usb; reset
bootdelay=3
baudrate=115200
preboot=
arcNumber=2097
mainlineLinux=yes
console=ttyS0,115200
usb_init=usb start
usb_device=0:1
usb_root=/dev/sda1
usb_rootfstype=ext2
usb_rootdelay=10
set_bootargs_usb=setenv bootargs console=$console root=$usb_root rootdelay=$usb_rootdelay rootfstype=$usb_rootfstype
stdin=serial
stdout=serial
stderr=serial
ethact=egiga0
ethaddr=00:10:75:1A:CD:F5
bootargs_root=root=/dev/mtdblock2 ro
bootcmd_original=nand read.e 0x800000 0x100000 0x300000; setenv bootargs $(console) $(bootargs_root); bootm 0x800000
bootcmd_usb=run set_bootargs_usb; run usb_init; ext2load usb $usb_device 0x800000 /boot/uImage; ext2load usb $usb_device 0x1100000 /boot/uInitrd; bootm 0x800000 0x1100000

After a reboot

Pogoplug:~$ cat /proc/diskstats
   1    0 ram0 0 0 0 0 0 0 0 0 0 0 0
   1    1 ram1 0 0 0 0 0 0 0 0 0 0 0
   1    2 ram2 0 0 0 0 0 0 0 0 0 0 0
   1    3 ram3 0 0 0 0 0 0 0 0 0 0 0
   1    4 ram4 0 0 0 0 0 0 0 0 0 0 0
   1    5 ram5 0 0 0 0 0 0 0 0 0 0 0
   1    6 ram6 0 0 0 0 0 0 0 0 0 0 0
   1    7 ram7 0 0 0 0 0 0 0 0 0 0 0
   1    8 ram8 0 0 0 0 0 0 0 0 0 0 0
   1    9 ram9 0 0 0 0 0 0 0 0 0 0 0
   1   10 ram10 0 0 0 0 0 0 0 0 0 0 0
   1   11 ram11 0 0 0 0 0 0 0 0 0 0 0
   1   12 ram12 0 0 0 0 0 0 0 0 0 0 0
   1   13 ram13 0 0 0 0 0 0 0 0 0 0 0
   1   14 ram14 0 0 0 0 0 0 0 0 0 0 0
   1   15 ram15 0 0 0 0 0 0 0 0 0 0 0
  31    0 mtdblock0 0 0 0 0 0 0 0 0 0 0 0
  31    1 mtdblock1 0 0 0 0 0 0 0 0 0 0 0
  31    2 mtdblock2 3 0 6 0 0 0 0 0 0 0 0
  31    3 mtdblock3 0 0 0 0 0 0 0 0 0 0 0
   9    0 md0 0 0 0 0 0 0 0 0 0 0 0
   8    0 sda 1 0 8 10 0 0 0 0 0 10 10
   8    1 sda1 0 0 0 0
   8    2 sda2 0 0 0 0

I think it's a very strange behavior and I hope you can help me.

Greeting from Germany (so Sorry for my bad english)
Julian

This solved my problem:
http://forum.doozan.com/read.php?2,182

what exactly?

To boot the system into the Pogoplug and put in the console "reboot" instead of a "hard" reboot (put the power off an on again)

Then you didn't have a problem.
Plug devices with chained bootloaders will change between boot source on every reboot.
BUT, I think they always boot from NAND when they are hard powered.
So, you never had an issue, it was all working as expected.
Cheers

PS: anyone correct me if I'm wrong.

The 'dual boot' issue can now be fixed by installing my newer uBoot on mtd0.