Apple has released Java for Mac OS X 10.7 Update 1 and Java for Mac OS X 10.6 Update 6. In both cases, the updates address about a dozen security vulnerabilities, including one that could allow an untrusted Java applet to execute arbitrary code outside of the Java sandbox. (Free, 62.53 MB and 75.45 MB)
Mysteriously Moving Margins in Word
In Microsoft Word 2008 (and older versions), if you put your cursor in a paragraph and then move a tab or indent marker in the ruler, the change applies to just that paragraph. If your markers are closely spaced, you may have trouble grabbing the right one, and inadvertently work with tabs when you want to work with indents, or vice-versa. The solution is to hover your mouse over the marker until a yellow tooltip confirms which element you're about to drag.
I recently came to appreciate the importance of waiting for those tooltips: a document mysteriously reset its margins several times while I was under deadline pressure, causing a variety of problems. After several hours of puzzlement, I had my "doh!" moment: I had been dragging a margin marker when I thought I was dragging an indent marker.
When it comes to moving markers in the Word ruler, the moral of the story is always to hover, read, and only then drag.
Java for Mac OS X 10.7 Update 1 and Java for Mac OS X 10.6 Update 6
Set up short abbreviations which expand to larger bits of text,
such as “Tx” for “TextExpander”. With the new custom keyboard,
you can expand abbreviations in any app, including Safari and
Comments about Java for Mac OS X 10.7 Update 1 and Java for Mac OS X 10.6 Update 6
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All that said, unless you actually use Java much, or run into Java on the Web a lot, this Java update probably isn't a really important thing to have.