A special extended edition of Tech Messages for 2010-09-03 through 2010-09-04:

• A batch of WS-X6582-2PA may fail when booting under low temperature — Upgrade program available
  Due to a delay in the early start up of the 1.2 voltage rails during the Power up sequence, a batch of WS-X6582-2PA cards in the 7600 platform have been shown to be prone to fail when booting under temperature below 15C. The failure condition may manifest when the card is powered up (booted) for the first time. Cards in working mode are not expected to exhibit this failure.
• Introduction to Computer Science and Programming | MIT Video Course
  Learn, learn, learn.
• What are the essential tools you always have handy when attempting to fix someone's PC problem? – Super User
  This is from superuser.com. Plenty of ideas on this page to help you out.

A special extended edition of Tech Messages for 2010-09-01 through 2010-09-03:

• Interactive map of Linux kernel
• XenServer 5.6 cdrommon Consumes All CPU Resources | Geek Run Virtualization Blog
  Users of Citrix XenServer 5.6 are experiencing a problem where the cdrommon process begins consuming all CPU resources and affecting virtual machine performance.
• 95th percentile explained — sean adams mirror
  This is a good explanation of 95th percentile billing and why ISPs use it.

While doing some testing with Cisco Access Registrar (CAR) 5.0, I noticed that the test user had hundreds of old sessions hanging around:

--> query-sessions /r with-User X
Sessions with-User X for /Radius
  Sessions for /Radius/SessionManagers/session-mgr-1:
    S432 Key: 04000000000CF660, NAS: NAS.slaptijack.com, NAS-Port: 0, User-Name: X, Time: 21:19:26, Acct-Session-Id: 04000000000CF660
<snipped a lot of lines>

--> count-sessions /r with-User X

Total 469 session(s) with-User X for /Radius/SessionManagers

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>>> print "".join(" hello   world ".split())
helloworld

The key to the above is that the String method split() separates the string on any amount of whitespace when no separator is specified.

Interesting technology-related news from around the web for 2010-08-31:

• Recover Data Like a Forensics Expert Using an Ubuntu Live CD – How-To Geek
• 10 ways your Mac can make you smarter | News | TechRadar UK
  'Nuff said!
• The Silent Number: Ubuntu 10.04 Post-Install Guide: What to do and try after installing Lucid Lynx!