Don’t touch the running system.
Yesterday I’ve decided to spend some time to upgrade my “old school” TortoiseSVN to the latest release. I thought it should be a five-minute-problem or so. Sure…
The result was a nice greeting from my ZoneAlarm who was missing one of the Tortoise dlls. Thanks to Google and the author of this post. It was 5 minutes to find the answer however the solution took another 15 minutes instead of the 5 initially planned.
First commit, then upgrade ;)