The most important tweak for your Microsoft Server running Exchange 2010.

In Microsoft's infinite wisdom, they decided to have the Exchange software hoard every free speck of RAM on it's host system in an effort to minimize pagefile use and speed up end-user experience.  The result in reality is a system that struggles to keep up with just about any application, including the mail system itself.  The fix is fast and fairly simple for those with some decent IT knowledge.

To determine how much RAM to let Exchange play with, an easy formula I use is 66% of total system RAM for multi-role servers, and 75% total RAM for servers dedicated to the mailbox role.

1) Start the server's ADSI editor
2) Navigate to Configuration > Services > Microsoft Exchange > <Organization Name> > Administrative Groups > <Administrative Group> > Servers > <Server Name> > InformationStore
3) Right-click InformationStore, and edit msExchESEParamCacheSizeMax. Set it it to the number of pages to maximize the Database Cache to. (Pages = M x 32768) Where "M" is the number of GB's of RAM you want to set aside for Exchange.
4) (only necessary in Exchange SP1 which you SHOULD be using!) edit the msExchESEparamCacheSizeMin parameter and set it to 256.
5) Restart the Microsoft Exchange Information Store service for the change to become effective.

Why Java is junk, and how to uninstall it.

BEZALU SECURITY ALERT: Attention all computer users (this includes you too Mac fans)
Due to recent outbreaks in Java based malware/viruses. It is HIGHLY recommended to disable/remove Java from your system. The majority of virus writers have moved to exploiting Java security vulnerabilities. This is due to them being able to infect Windows, Macs, and Linux systems all with one exploit. Java was behind over half a million macs becoming infected with the flashback virus last year. Some security sites are recommending disabling Java, but I recommend uninstalling it completely just to be safe. If you actually need it for something like an online meeting through your company, it only takes a few minutes to download and reinstall it from java.com.

WINDOWS USERS,
You can uninstall it just like any other piece of software under "Control Panel > Uninstall a program". Remove anything under "Java" or "Java Update" or "Java Runtime". Restart the PC.

MAC/OSX USERS,
Click on the Finder icon located in your dock
Click on Applications tab on the sidebar
In the Search box enter JavaAppletPlugin.plugin
This will find the JavaAppletPlugin.plugin file
Right click on JavaAppletPlugin.plugin and select Move to Trash

LINUX USERS,
Open Terminal Window
Log in as the super user
Type: rm /usr/lib/mozilla/plugins/libnpjp2.so
You will be prompted to remove symbolic link:
rm: /usr/lib/mozilla/plugins/libnpjp2.so ?
Type: Y