Some analysts applauded the possible bid because of the benefits they see for both airlines in such a deal.
Nor was it clear which of the parties in a possible bid wanted to take over Universal's film studio.
Officials decline to say how much the system might cost, saying they want to get the lowest possible bids.
He continued to flirt with a possible bid for President.
The stock has risen in recent weeks on speculation about a possible bid.
In a separate development, the flight attendants' union at United said it would join the discussions about a possible bid.
The three filed the suit together, but it was uncertain whether they are working on a possible bid for Time.
The same member suggested that one twist could be a groundswell of support for a possible Brazilian bid.
We are very concerned because this has tarnished the image of the Government, which was only seeking to get the highest possible bid.
Presumably, she has been persuaded that a 2006 re-election campaign will not harm her possible bid for the presidency in 2008.