hi, i'm new but busy

i'm running ubuntu feisty


i was busy watching dynebolic distro and thinking maybe to install on hdd

made a 'nest' on hdb 1, i suppose to encrypt , didn't and suddenly somenone was in my system and i can't get into my accounts like they don't exist but can get in the program like multiuser

but i can't delete the nests (2 actually now) either

should i do this with root superuser (interminal) , cause it says everytime : doesn't have acces to do this

is there a code to empty or delete the 'nests'
just want to record some music and dynebolic has low-latency kernel i compared with ubuntu's it's faster, but now i made a big mistake, didn't protect myself

everytime i put in boot cd it automatically detects nests, i can get into one encrypted nest i made

but can't log in any accounts i made , strange

there not even in the home file where they should be

i saw the name of the other person while i was trying to log in ,

so if he/she is controlling multiusr account which i doubt,

how can i delete nests aand start proces over (making nest, was planning to install to hdd , was busy , but intruder , kind a messed up the proces)

my xp dual boot already crashed totally, had spyware , someone is busy

now i have a complete ubuntu feisty system ! proud but need some help , beryl effects are beautiful too