@Nightmare - not really sure what you are suggesting... is it that the OP shouldn't be using Sardine on the device? Perhaps s/he falls into the "tinkerer" category - I know I do. I tried Sardine and also got the reboot loop - not surprising really, as "apt-get upgrade" failed due to a multitude of missing dependencies!

Just out of interest, has anyone succeeded installing Sardine on the device by following the Wiki "getting started" instructions?