I have Avast! FREE v8.0.1489, on Dell Inspiron 1564 Intel i3 2.13GigHZ Win7 SP1 64bit.
Software Updater just alerted that Java was needing an update, I clicked on the update now and my FireFox v21.0.x came up and went to Oracle's Java update site. Because my system is 64bit I downloaded the one for 64 bit "jre-7u25-windows-x64" and 32 bit, "jre-7u25-windows-i586" the 'x64 installed with no problems. The 'i586' said the update is already installed and stopped, my "Software Updater" from Avast! still shows Java 32bit is NOT updated and have done a rescan several times.