If you recently upgraded your Ubuntu to 8.04 (64bit version), the Sun JVM that comes with it may be giving you an error similar to this one:
Loading FrostWire:
#
# An unexpected error has been detected by Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007fa25489d755, pid=8123, tid=1082538320
#
# Java VM: Java HotSpot(TM) 64-Bit Server VM (10.0-b22 mixed mode linux-amd64)
# Problematic frame:
# C [libc.so.6+0x30755] catgets+0x15
#
Users from our FrostWire Forum came up with a solution:
by xbj9000 on Fri May 16, 2008 3:13 pm
I have a solution for those of us running 64 bit systems:Code:
sudo apt-get install ia32-sun-java6-bin
Code:
sudo update-alternatives –config java
Then choose the ia32 version of Java 6.
Thanks a lot guys.
Official FrostWire Blog 
i have problems running frostwire on hardy 64bit
heres the message when i try runnuning it from terminal
Starting FrostWire…
Java exec found in PATH. Verifying…
Suitable java version found [java = 1.6.0_06]
Configuring environment…
Loading FrostWire:
#
# An unexpected error has been detected by Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007f951376a755, pid=9701, tid=1085815120
#
# Java VM: Java HotSpot(TM) 64-Bit Server VM (10.0-b22 mixed mode linux-amd64)
# Problematic frame:
# C [libc.so.6+0x30755] catgets+0x15
#
# An error report file with more information is saved as:
# /usr/lib/frostwire/hs_err_pid9701.log
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
/usr/lib/frostwire/runFrostwire.sh: line 125: 9701 Aborted ${JAVA_PROGRAM_DIR}java -ea -Dorg.apache.commons.logging.Log=org.apache.commons .logging.impl.NoOpLog -Djava.library.path=. $EXECUTABLE -jar FrostWire.jar $ARGUMENTS
************************************************** ****************
Something went wrong with FrostWire.
Maybe you’re using the wrong version of Java?
(FrostWire is tested against and works best with with Sun’s JRE, Java 1.4+)
The version of Java in your PATH is:
java version “1.6.0_06”
Java(TM) SE Runtime Environment (build 1.6.0_06-b02)
Java HotSpot(TM) 64-Bit Server VM (build 10.0-b22, mixed mode)
i installed java usind the restricted extras in terminal and i also installed another java from synaptics (its like java jre6 or something)
i also tried this in terminal
sudo update-java-alternatives -s java-6-sun
Hey…thank’s a lot, that work for me…
that’s the great part of the open source, people working together…
farewell!
command own:
florian@secureserv:~$ sudo apt-get install ia32-sun-java6-bin
Paketlisten werden gelesen… Fertig
Abhängigkeitsbaum wird aufgebaut
Reading state information… Fertig
Paket ia32-sun-java6-bin ist nicht verfügbar, wird aber von einem anderen
Paket referenziert. Das kann heißen, dass das Paket fehlt, dass es veraltet
ist oder nur aus einer anderen Quelle verfügbar ist.
Doch die folgenden Pakete ersetzen es:
sun-java6-jre
E: Paket ia32-sun-java6-bin hat keinen Installationskandidaten
florian@secureserv:~$
command two:
florian@secureserv:~$ sudo update-alternatives –config java
[sudo] password for florian:
update-alternatives: unbekanntes Argument »–config«
florian@secureserv:~$
ohh very good!
gOOD!
here: https://help.ubuntu.com/community/FrostWire
thats good! and GO! :]
Thank you so much!!
You saved my day.