I have Xubuntu 12.10 installed on my machine.
While installing i had created a user 'lalu' ,
later on after few setting changes i screwd up something and now after login
1) mouse cusrsor was not coming
2) any app that i open was not visible in task bar
to avoid these problm , i created a new user 'arif' , made him admin.
once that's done. I logged in a arif and everything was fine with
this new user.
Since 'lalu' was default user ( and automatic login was enabled)
by default when i boot my mahchie, i used to get logged in as 'lalu', which was a screwed up user.
so i logged in as 'arif' and deleted 'lalu'
After this my life is screwed even more.
Now i can't install/uninstall any software or take updates.