finally
for anyone interested here’s how i did
-first i did a system restore and went back to a unmodifed firmware. so i could start over
i used those two command in putty
apt-get update (not upgrade, NEVER)
and then
apt-get -f install mysql-server
(-f stands for fixing)
created a password when prompt appeared
then i rebooted the wdmc (mycloud)
after that i re-opened putty and wrote:
mysql -uroot -p (-u is for user and -p is for password)
entered password when asked
then i followed these instructions http://wiki.xbmc.org/index.php?title=MySQL/Setting_up_XBMC
launched xbmc and voila!
