active directory account lockout

Very good resource:
Exchange Guru
Also check for LinkedIn contact sync.

Cisco ASA VPN Connection Profiles

Very good explanation of Connection profiles on ASA.

vSphere Storage Troubleshooting

vSphere Storage Troubleshooting

UCS Boot from SAN troubleshooting

Cisco VIC Boot from SAN troubleshooting

https://angryjesters.wordpress.com/2012/01/05/cisco-vic-boot-from-san-troubleshooting/

9 Common Spanning Tree Mistakes | Network World

9 Common Spanning Tree Mistakes | Network World: Frequent spanning tree protocol misconfigurations cause network problems

Powershell: File Dialog

Here is an example of presenting the user with a file dialog. 
This script also does some conversion and opens the CSV in Excel when it's done.

############################################################################################
#
# SSID Report Conversion
# Process SSID report from NCS.  Calculate connection time in seconds and KB transferred
#

Function Get-FileName($initialDirectory)
{   
 [System.Reflection.Assembly]::LoadWithPartialName("System.windows.forms") | Out-Null
 $OpenFileDialog = New-Object System.Windows.Forms.OpenFileDialog
 $OpenFileDialog.ShowHelp = $true
 $OpenFileDialog.initialDirectory = $initialDirectory
 $OpenFileDialog.filter = "All files (*.*)| *.*"
 $OpenFileDialog.ShowDialog() | Out-Null
 $OpenFileDialog.filename
} #end function Get-FileName

# 

[string]$infile = Get-FileName -initialDirectory "Downloads"
if (-not $infile) { exit }

$outfile = $infile -replace ".csv", "-ADJUSTED.csv"

$file = get-content $infile
$today = Get-Date
$today = $today.touniversaltime()

write-output "Converted:  $today" | out-file -encoding ASCII -filepath $outfile
foreach ($line in $file) {
 $field = $line.split(",")
 if ($field.count -eq 13) {# report body
  if ($field[0] -eq "Client Username") { #header line (first field heading matches)
   $heading = $line + ",Seconds Connected,KBytes Transferred"
   write-output $heading | out-file -encoding ASCII -filepath $outfile -append
   continue
  } #end header line

  #fix average Kb
  $avgKbits = $field[6]
  if ($avgKbits -eq "<0.1") { $avgKbits = 0 }
 
  #Connection time in seconds
  $conn = $field[5]
  [array]$seperator = " hrs " , " min " , " sec"
  $option = [System.StringSplitOptions]::RemoveEmptyEntries
  $hours = 0
  $minutes = 0
  $seconds = 0
  $connection = 0
  $temp = $conn.split($seperator, $option)
  if ($temp.count -eq 3) {
   $hours = [int]$temp[0]
   $minutes = [int]$temp[1]
   $seconds = [int]$temp[2]
   }
  elseif ($temp.count -eq 2) {
   $minutes = [int]$temp[0]
   $seconds = [int]$temp[1]
   }
  elseif ($temp.count -eq 1) {
   $seconds = [int]$temp[0]
   }
  $connection = ( $hours * 60 * 60 )  + ( $minutes * 60 ) + $seconds

  #Bytes transferred
  $KBytes = $connection * $avgKbits * 8
  $line = $line + "," + $connection + "," + $KBytes
  write-output $line | out-file -encoding ASCII -filepath $outfile -append
 }#end if 16 fields

 else {# report heading line (does not have 13 fields)
  write-output $line | out-file -encoding ASCII -filepath $outfile -append
 }#end else 

}#end foreach line

start excel $outfile