Red Bull figures have joined Damon Hill in predicting that trouble is on the horizon for the relationship between McLaren's British teammates.
"It's just been on simmer so far and it will start to boil over," 1996 World Champion Hill said earlier this week.
Mark Webber on Wednesday admitted that his own pairing at Red Bull with Sebastian Vettel is not made in heaven, particularly in the wake of their Istanbul crash.
And while world champions Lewis Hamilton and Jenson Button appear friendly at present, "It will take only one small incident for things to flare up between them," Red Bull boss Christian Horner thinks.
"They won't be having so much of a love-in when that happens," he added.
Horner's 'love-in' comment is probably a reference to the series of viral videos distributed by McLaren and its sponsors depicting the teammates in a range of affable activities.
"I believe they are working hard to put up a bit of smoke and mirrors," said Webber. "But those two are racing each other."
"They have not had the sort of incident Seb and I had -- yet."
"Lewis and Jenson are always racing at the front and it's inevitable that it's going to happen, because of what's at stake and both are hungry drivers," he added.
Kubica Could Leave Renault At End Of 2011: Report
Robert Kubica may be contractually free to leave the Renault team at the end of next year.
The French team announced on Wednesday that the Pole has extended his current deal to include the 2011 and 2012 seasons.
But although boss Eric Boullier indicated that the "multi-year deal" will stop the "many rumours" surrounding the 25-year-old's future, speculation about Kubica's services looks set to continue.
When Renault announced Kubica's 2010 contract last October, the media statement said he will race for the Enstone based team "from the 2010 season onwards".
But we reported in May that the 2010 contract included an option that would allow Kubica to leave if the team is not fourth in the Constructors' Championship by July 15.
At the time of writing, Renault is currently fifth, 20 points behind Mercedes.
Finland's Turun Sanomat reports that Kubica will be similarly free to leave Renault at the end of next season if Renault does not meet more contractual performance targets.
The report also said Kubica's retainer will be higher in 2011, as will the jointly Genii Capital and Renault-owned team's overall budget.
Next Three Races Key To Ferrari's 2010 Campaign
The next three races could be the tipping point in Ferrari's 2010 World Championship campaign.
Recently struggling with the 2010 car, the F10 was substantially upgraded for the recent Valencia race, and more improvements are in the pipeline for the forthcoming races prior to the sport's August break.
"For sure a win would be very important," confirmed team boss Stefano Domenicali, referring to the forthcoming string of races in Britain, Germany and Hungary.
Silverstone marks the mid-point of the 2010 season, and the highest placed Ferrari driver is Fernando Alonso, with a 29 point deficit.
And the Northamptonshire venue will be a telling test for the F10, given that at the similar Turkey layout in May, the drivers were notably off the pace.
"So if the F10 works well here, we will know we are on the right road," said Felipe Massa, who is another 31 points behind his Spanish teammate.
The Brazilian said more developments are scheduled for the back-to-back Hockenheim and Hungary rounds.
"These three races will be very important and we will be pushing very hard to try and get ahead of our competitors," said Massa.