There are some cases in England of post office managers going to jail because the Post Office software audit trail made it look like those managers were defrauding the post office. It turns out there might be severe bugs causing these errors

http://www.bbc.co.uk/news/uk-23233573

Suicide is complex and I don't want to ascribe a simplistic reason to suicide, but at least one post office manager died by suicide after a wrongful accusation.

A bungled software update left many people in the UK without access to their money for weeks. At least one person was imprisoned for that - they had to pay a fine by a certain date; they tried to pay but couldn't; even though this was totally outside their control the system wasn't flexible enough to cope.

http://www.bbc.co.uk/news/technology-21280943

British Gas allows some people to make weekly payments as part of a payment plan scheme. But you have to pay exactly that amount on exactly the agreed day or their software does not recognise the payment as part of the plan. EG you agree to pay £10 every Friday. On Wednesday you start by paying £20, then on Wednesday you pay £12, and you continue to pay £9 or £12 every Wednesday. You're always actually paid more than your plan agreement; and your actual balance is in credit; but you'll be getting aggressive "red" letters from British Gas telling you that you have not kept up to date with your plan and that your account is in arrears. British Gas, and I say this as politely as I can, are fucking scum.