Processes Safe to Disable from Startup

[Guest BejhanJ]

I just got an Acer Liquid E and read that a problem with Android is that too many processes run at startup causing short battery life. So I rooted my phone and installed a Startup Manager application. However, I'm not sure which applications are vital at startup and which would be safe to disable. Could someone advise? Here's my current list:

Dialer

Android System

Download Manager

Contacts

Calendar Storage

GMail Storage

Update Notification

SIM Toolkit

Bluetooth Share

Java ME Apps

Java ME Apps

Google Partner Setup

Tasks

Messaging

Messaging

Calendar

Network Location

Clock

Media Server

Email

Email

Media Storage

Media Storage

nemoPlayer (already disabled)

Sync Feeds (already disabled)

Documents To Go (already disabled)

Google Talk Service (already disabled)

Acer Sync (already disabled)

Voice Dialer (already disabled)

AcerClockWidget (already disabled)

Some of these entries appear twice, I'm not sure if this is just because of the Startup Manager application I am using or if there is two processes starting for the same application.

[Guest BejhanJ]

Update.

I have disabled all but the following:

Dialer

Android System

Download Manager

Contacts

Calendar Storage

Update Notification

SIM Toolkit

Google Partner Setup

Messaging

Messaging

Calendar

Network Location

Clock

Email

Email

Media Storage

Media Storage

Everything seems to be working fine.