Hi just moved into my new flat a week ago and got a scare from the toilet bowl. Went to toilet yesterday evening and noticed the toilet bowl seat was wet! Strange! Floor not wet but toilet seat wet. Looked up but see no leakage from ceiling, water cistern also ok. Then started to brush teeth and suddenly, heard a rumbling sound coming from the water inside the toilet bowl (not the water cistern) ... liken to mini eruption. Then some water splashed onto the toilet seat. It's scary .... What if i was sitting on the toilet bowl! wanted to capture it on my hp but it happened so fast, gone b4 i could take hp. Anybody out there got such experience? anybody can explain why this can happen? It may sound funny, but it's true, scary .....