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Running 64-bit Ubuntu?
Use 32-bit Java. While gt;`_. Using a 64-bit Java VM appears to increase Mifos memory requirements. On Ubuntu, a 32-bit Sun JRE is pre-built (the ia32-sun-java6-bin package), and `a JDK can be built|http://java.dzone.com/tips/32-bit-jdk-a-64-bit-ubuntu-sys] if needed.
What Next?
Install some Development Tools and start fixing some bugs!