Hi guys, does anyone know?

This list is somewhat subjective, but keeping that in mind, I'll give it a shot:

Disable

hotkey-setup used for hotkey's for your keyboard. you don't need it for standard hotkeys
irq_balance this is for multiple CPU or multi-core (ex. core 2 duo) systems. if your systems is "old" it probably has a single CPU and so you don't need
auditavahi-daemon local network service discovery thing. use it if your local network has file-servers, other PCs, etc & they're running services you want your computer to "find," otherwise "lose it"
avahi-dnsconfd an adjunct to the above, same rules apply
portmap likely don't need
postfix mail related, probably don't need
splash-early splash screens, goodness gracious, who cares about splash screens
splash ugh, more of the same
sshd secure shell, purists will call me crazy, but much of this is useless crud for most users.

maybe lose:
easyssyslog since you're also running syslog. I'd pick one or the the other
microcode.ctl microcode update utility for newer CPUs, if yours is "old" probably can lose
ntp network time protocol, lose it unless you want your clock to always be updated by the network

The rest of the stuff ranges in usefulness from "relatively benign" to "darned important."

Powersaved is used for more than just your battery, though if you never run on battery you could lose it, but your system will never throttle back or do any other power (AC power in this case) saving stuff. If running full-bore works for you & the laptop doesn't have a problem with heat dissipation, get rid of it.

Also, if you don't run on a network you could lose "network" all the susefirewall stuff, etc.

This list is somewhat subjective, but keeping that in mind, I'll give it a shot:

Disable

hotkey-setup used for hotkey's for your keyboard. you don't need it for standard hotkeys
irq_balance this is for multiple CPU or multi-core (ex. core 2 duo) systems. if your systems is "old" it probably has a single CPU and so you don't need
auditavahi-daemon local network service discovery thing. use it if your local network has file-servers, other PCs, etc & they're running services you want your computer to "find," otherwise "lose it"
avahi-dnsconfd an adjunct to the above, same rules apply
portmap likely don't need
postfix mail related, probably don't need
splash-early splash screens, goodness gracious, who cares about splash screens
splash ugh, more of the same
sshd secure shell, purists will call me crazy, but much of this is useless crud for most users.

maybe lose:
easyssyslog since you're also running syslog. I'd pick one or the the other
microcode.ctl microcode update utility for newer CPUs, if yours is "old" probably can lose
ntp network time protocol, lose it unless you want your clock to always be updated by the network

The rest of the stuff ranges in usefulness from "relatively benign" to "darned important."

Powersaved is used for more than just your battery, though if you never run on battery you could lose it, but your system will never throttle back or do any other power (AC power in this case) saving stuff. If running full-bore works for you & the laptop doesn't have a problem with heat dissipation, get rid of it.

Also, if you don't run on a network you could lose "network" all the susefirewall stuff, etc.

I wrote a blog entry on how to turn openSUSE a lot faster.

Whooo! What a breeze
I removed Beagle, the update applet and these applications from the start session and my computer is MUCH faster:
It's using only 91MiB and the CPU is idle. It used to use all my RAM and it used SWAP even only to run Firefox. As a side note I have a 650Mhz Pentium 3 with 256MB of RAM (maximum possible). Thanks a lot!