Do you have troubles with ARB?
Perhaps you will find a solution within the
frequently asked questions catalogue provided by the ARB development team at the TU Munich.
More information can be found in the
documentation section at www.arb-home.de.
There is a very active Yahoo mailing list of the ARB/SILVA community.
Nearly 700 members (as of April 2008) are asking questions, providing answers and exchanging news.
You have found a bug in ARB or want to suggest a new feature for the upcoming release?
Visit the
ARB Bug Tracker offered by the ARB development team at the TU Munich.
Please, carefully read the short introduction provided! This will help to keep the community tracking approach slim and efficient.

Besides Linux, ARB is also running on Macintosh systems especially if you are using Mac OS X.
Mike Dyall-Smith has set up an excellent webpage describing the steps necessary for installation.
Visit his webpage www.haloarchaea.com for detailed information on how to run
ARB under Mac OS X.
The rapid growth of the rRNA data sets has caused severe limitations for many users related to the ARB hardware requirements. ARB is a so-called "in-memory" database and the larger the databases are, the more main memory (RAM) is required by ARB to handle them. Basically, there are two options to face the problem: (1) hardware upgrades or (2) reduced data sets.
The SILVA project has now addressed the second option by providing a non-redundant (NR) SSU Ref data set which contains a significantly reduced number of sequences but still is representative. For more information check the SILVA
SSU Ref NR project section.
In addition, the following table, provided by Ribocon, will help you to find out more about the ARB hardware requirements:
ARB/SILVA Memory Requirements (pdf)

Still problems with installation or handling of ARB? Do you need support in alignment, data integration or analysis?
Are you interested in customized ARB solutions?
Please visit
www.ribocon.com/home/arb for more information
or directly contact
arb (at) ribocon.com.