After "the wrong kind of snow" and "leaves on the line", train travellers have been given a new reason for delays - dew on the tracks.
Given the mildness of the weather and the fact that autumn is months away, London-bound commuters on services run by the Southern train company were surprised to hear that their journeys were being delayed by "poor railhead conditions" on Wednesday.
A Southern spokeswoman later explained: "This is a railhead phenomenon that happens at this time of the year.
"Dew gets on the tracks and makes conditions difficult."
The problem led to delays for some early-morning commuters from the Uckfield area of Sussex, while services from Godstone and Tonbridge in Kent were also affected.
To add to Southern travellers' difficulties, a signalling problem at Honor Oak Park in south east London led to delays to services in and out of London Bridge station on Wednesday.