After an upgrade here is how I got www.aleks.com to work again
- removed all old add-ons that are not compatible with firefox 3
- type locate aleksPack in a shell and remove all occurrences
- start the Synaptic Package Manager and remove all openJdk and all java6
- Install java5
- Download the aleks pack from http://www.aleks.com/aleks/java/aleksPack10.jar
- copy the newly downloaded file to -> sudo cp aleksPack10.jar /usr/lib/jvm/java-6-sun-1.6.0.06/jre/lib/ext/aleksPack10.jar
Note: If you have a different version of java installed replace the java-6-sun-1.6.0.06 with your version.
You can check your version of java by typing java -version on the command line
Here is my output
name@laptop:~$ java -version
java version "1.5.0_15"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_15-b04)
Java HotSpot(TM) Client VM (build 1.5.0_15-b04, mixed mode, sharing)
Java 5 just seems to work better with aleks than java 6. You sometimes still have to clear you classpath with the java console but everything else seems to work smoothly.
If you are having trouble you can verify you java installation with the following link http://www.java.com/en/download/help/testvm.xml




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