What are these services?

[CrashedAgain]

I have done an upgrade on Knx 3.4 full HD install, now I have a lot of services starting in runlevel 5 that were not there before. I would like to know what these are & if any of them are necessary. It would appear not, since before the up grade I had only cupsys, samba & ssh. Now I have :
sysklogd
klogd
isdnactivecard
ppp
bind9
portmap
apmd
cupsys
dbus-1
dhcp3-server
distcc
ipx
isdnutils
makedev
partimaged
pcmcia
pppstatus
rsync
samba
smail
ssh
sslwrap
xfs
aumix
bluez-utils
mdadm
nvtv
cron
xdm
OK, a few of these I know (like ppp) but can anybody tell me what these are & why/how did the upgrade suddenly think they were needed?
(I also had nis which took forever to boot trying to set up y-something so I have already removed it. Dunno what it was either but I'm still running)

Also, running 2.6 kernel I get a startup error

audit(series of numbers, can't copy that fast)
RAMDISK: incomplete write (-28 ! = 32768)

Happens on both my machines (desktop & laptop) but doesn't seem to affect anything, systems seem to start OK. any idea what this is?

[UnderScore]

I don't know anything about the 2.6 error. I think that a upgrade defaults to enabling ALL services. I too have seen it add many servivces to my default runlevel.

sysklogd - system logger - syslog - IMHO necessay
klogd - kernel logging - IMHO necessary
isdnactivecard - isdn something - probably not necessary
bind9 - DNS server - not necessary
portmap
apmd - Advanced Power managerment service - useful for laptops - IMHO, not necessary
cupsys
dbus-1 - DBUS is a new inter procesess commiuncation protocol that is part of the new Gnome infrastructure. DBUS is now being slowly interegrated into KDE. If you use Gnome then you will probably want this.
dhcp3-server - DHCP server - not necessary
distcc - Distributed C compiler - not necessary
ipx - IPX/SPX protocol acecss for connecting to Netware servers/clients - not necessary
isdnutils
makedev
partimaged - Partion Image server - not necessary
pcmcia - not necessary unless you are running on a a laptop
pppstatus
rsync - file/folder syncronization server - not necessary
samba - windows file/print server - not necessary
smail
ssh
sslwrap
xfs
aumix
bluez-utils - bluetooth utilities - not necesary unless you use bluetooth
mdadm
nvtv - nvidia tv out - not necessary
cron - cron is a system scheduler - IMHO necessary

I hope this helps.
James

[CrashedAgain]

Thanks. That helps.