Colchester boss Joe Dunne admits he is fearing the sack after his 10-man strugglers were thrashed 5-1 by MK Dons.
The Dons climbed up to second in npower League One thanks to Luke Chadwick's brace and further goals from Shaun Williams, Jon Otsemobor and substitute Ryan Lowe. U's sub Gavin Massey was sent off after 67 minutes for the visitors, who only had Ian Henderson's consolation goal to show for their lacklustre efforts.
Dunne was handed a one-year rolling contract after replacing John Ward in September but he admitted his position is already looking perilous.
"It's a bad run and managers lose their job for that kind of stuff - the buck stops with me," said Dunne. "We've lost five in six. Prior to that we were doing great but that counts for nothing now. Although we were bottom when I took over, we moved our way up and now we're slipping back down. I don't want to lose too many more or else I won't be standing here talking to you guys.
"We've competed in most games but here we didn't and we got what we deserved against a very good side. MK Dons taught us a footballing lesson and a work-rate lesson. We made a lot of individual errors and team errors and it could have been 10.
"We've had a frank conversation in the changing room, and that's putting it politely. It has to stop because we are now showing relegation form - it's disappointing."