WLS Installer hangs at 70%

I was trying to install WLS/SOA using domain wizard and it hangs for ever at 70%

took a dump and found that it hangs in

    at java/security/SecureRandom.generateSeed(SecureRandom.java:495)

which is a age old linux issue with java

 solution is to edit  the file jre/lib/security/java.security so that the following property is set permanently:

securerandom.source=file:/dev/./urandom

Good blog about it 

http://www.virtualzone.de/2011-10-24/javas-securerandom-generateseed-on-linux/ 

unpack.sh (domain migration tool) also hangs in the same code, 

so this modification fixed the that too, I highly recommend this since we don't

where else oracle fmw products use this ...