Feisty sometimes completely locks keyboard & mouse

[Larry Alkoff]

I'm using Kubuntu Feisty on a new drive in the same machine but 
different drive I formerly ran Dapper Dan with no issues at all.

At least 4 times in the past few days Feisty has completely locked up 
while I was typing - twice typing an email in Thunderbird and once just 
typing a command into Kterm.  Each time both the keyboard and mouse stop 
working.  Only a hard reset brings the computer to life.

When I reset after such a lockup, I see a message about a crash handling 
  and inviting me to click to see details, but when I click, the box 
disappears.

I've searched /var/log/* for some evidence of this to no avail.

Since the only non-common element is the drive (both purchased at the 
same time, same brand, size etc) and the version of Linux loaded from a 
downloaded and burned cd, it has to be one or the other.
It could also be some race condition bug.

Mostly I suspect the version of Linux but it's such a bear - easy to 
reload and hard to re-configure.

Anyone have any thoughts on how to troubleshoot this?

Larry
-- 
Larry Alkoff N2LA - Austin TX
Using Thunderbird on Linux