Java

Freeplane, a fork of the mind-mapping program, Freemind, works really well. Except for the fact that in my (K)Ubuntu installation, it sometimes hangs in the middle of editing a node. Once it becomes non-responsive, the only fix is to kill the process and restart the program. The version of Freeplane in Ubuntu 18.04 is 1.6.13. However, the current version (March 2019) of Freeplane is 1.7.7. So, it's highly possible that upgrading Freeplane to the latest version will fix this issue.

I just finished upgrading Eclipse from Galileo to the new Helios release. I performed the upgrade by adding Helios to the software sources list and updating and all seemed to go well. However, when I restarted Eclipse, I got a splash image which indicated that the upgrade had gone through and then ran into the following error message:
Failed to create the Java Virtual Machine

Following my recent adventures with Azureus, I found that Azureus was crashing on a regular basis and often not starting up at all. Running it from the command line gave me an error similar to the following:

An unexpected error has been detected by HotSpot Virtual Machine

and a lot of mumbo-jumbo following that.

This error has been reported all over the place, including at bugs.sun.com (who decided to close it.. thanks guys! :S). But no apparent solution was being provided anywhere. Azureus was definitely stable when running 1.4.2, although it wasn't exactly performing up to par. So, this was definitely a java compatibility problem.

I installed Ubuntu a few days ago and found that my client, Azureus, which had been performing well thus far on Windows (the previous OS on that box), was, all of a sudden, no longer connectable or providing extremely slow speeds. I tried playing with firewalls and what not, but finally came across the answer when I tried downloading a torrent from OiNK. The torrent failed with an error stating that my version of Java was incompatible with the version of Azureus (2.5) that I was running.