Mumbai: Given the rigid format, speculation is rife about whether ailing star, Salman Khan will co-anchor the reality show with Sanjay Dutt now.

Salman Khan's health issue has not only affected his film schedules, but has also become a cause of concern for the makers of Big Boss 5. The actor, who hosted the last season successfully, is supposed to co-anchor the fifth edition of the reality show with Sanjay Dutt from next month. In fact, promos of the show have already started airing.

According to the show's format, Salman has to trek to the Big Boss house in Lonavala every week to shoot his part. Two episodes are shot back-to-back, which can prove quite taxing.

Bigg Boss lasts for over three months and as the episode goes on air the same night, there is no way any adjustment can be accommodated.

This has led to speculation that Dutt may have to host the show solo for several episodes.

Says a source, "The channel decided to have two star hosts. They are keen that both be present every week. The Dabangg star and Munnabhai have their own inimitable styles, so together they can double the fun element."

Adds the source, "But till the picture is clear, Salman shooting for it every week looks difficult. It will prove extremely hectic as he has to continuously keep on talking being the host."

Last season, the actor had to return to Mumbai from Dubai, where he was celebrating his birthday with his family, for a day just for the shoot.

However, channel sources say, "He has not yet reverted about any changes in the shooting schedule." The show is also slated to undergo several changes this year to make it even more appealing.

A pregnant contestant in Bigg Boss 5!

As usual, the channel is tightlipped about the names of the contestants but sources state that this season there will be a participant who is pregnant. The channel refuses to name her at this juncture.

Also NAVJOT SINGH SIDHU and KAMAL R KHAN (who is claiming he is in the show) are definitely not among the contestants.

The channel is keen that KARAN JOHAR be in the house at least for a day especially after Abhishek Bachchan and Riteish Deshmukh have been mustering support on their micro-blogging sites to pack KJo in the house.