it happens to me when my installation fails in Synaptic Package Manager

i searched the solution but didn't found any... so this is what i do...

Warning - this will reset Easy Debian LXDE
Requirement - you need to have lxde image file i.e "debian-m5-v3e.img.ext2"

1) connect N900 to pc (enable hidden files and folders)
2) in N900 main directory you will find a 2gb file named "debian-m5-v3e.img.ext2"
3) rename debian-m5-v3e.img.ext2 image file of Easy debian to debian-m5-v3e.img.ext2.bak(backup file)
4) extract a new image on that location from debian-m5-v3e.img.ext2.lzma.. (doing it from pc will be fast)
5) disconnect from Pc
6) Start Lxde
7) in case it doesn't work you are still having Backup as ".bak"