z System customers should subscribe to the Systems Security Portal to receive information about security and integrity APARs.
Repeat the check for software site 'Mars' (https://ondemand.com/neon).
If you are not satified with the after the above steps, install jrockit instead of sun jdk, and change some of the vm options by jrocket specification, jrockit is faster than sun jdk.
Some note: On my laptop(Aspire 4745G 4G mem ), windows 7 x64, by default, it takes more than 30 seconds to start eclipse. And after jdk moved to ram disk, it takes 10 seconds to startup.
The installation fails with a similar error message as in FAQ #2 (Unable to read repository ...).
However, the detail message points to a certificate error like "Sun Cert Path Builder Exception: unable to find a valid certification path".