Apt-get install those programs you removed in response to them being started. If you didn't want them to start upon your next boot up, open a shell console as root and type:

Code:
update-rc.d -f package remove
where package is the package being started. That will remove the symlinks in the rc#.d directories. If you need to put them back, you can use sysvinit (graphical utility) or open a shell console as root and type:

Code:
update-rc.d package defaults
and the symlinks will be created for starting programs at boot with the default number of 20.

As for kmix, to set the bars at a preset level, you need to set it in two places:
1) From kmix itself, set your bars to a level you desire, and then click on settings, then set volume levels as default.
2) From kcontrol, go to sound & multimedia >sound system >mixer tab > click the save volumes button and put a check on load volumes at login.

You're done and your sounds will start at the level you desired.
HTH,

Durand