Last night I went downstairs to check on my kegs and found that they were sitting in about 4 inches of Hefeweizen. Careful application of some soapy water revealed the outflow post on the keg is leaking, allowing about two gallons of beer to fill the bottom of the kegerator. I pulled out my beer siphon, hooked up a tube, and cleaned it out manually.
This isn’t the first time I’ve had a flooded kegerator; this same keg was leaking from the main seal a year or two ago, and I fixed that with a new seal and some food-grade grease. It’s just annoying to have taken the time to brew the beer and then have it wasted by mechanical error.