Welcome to the board:
The speed of light does present a problem to a young universe and certainly presents a mega problem to a literal 6 day creation.
I've read a couple of things from some creation scientist that I know won't hold water on this board but some explanation is as follows: the decay of light theory. This subject has been debated since the 1980s.
The argument is that the speed of light has been slowing down (and thus travelled much more rapidly in the past), and if correct, would indicate a very young universe in terms of thousands rather then millions or billions.
An Australian scientist named Barry Setterfield has studied this extensively and authored a book titled, "The Velocity of Light and the Age of the Universe". According to Setterfield the first careful measurement of the speed of light was made by a Danish scientist, Roemer, in 1675 and then by an English astronomer, Bradley, in 1728. It has been measure over and over since at which we've reached an equilibrium of 299,792.458 by 1960 (now atomic clocks are used).
The data indicates that that the speed of light was around 2.6% faster in 1675 then it is today. Setterfield postulates that the speed of light was 5 X 10 to the 11th power faster at the time of creation. I'm not going to go into his formulas unless someone wants me too as it confuses me but this is one theory.....is it a stretch? Yes, and there are many creationists who don't believe this theory. There have been other studies done by scientists that have also found decreases in the speed of light but we can never know for sure what the speed of light was at the time of creation. I feel that the theory does deserve some attention but much more research needs to be done to verify any of this.
There's another theory, which I won't go into detail on, but it's called the Distortion of Time in White Holes. Nevermind, lol, Taq just described it. To me, that's even more of a stretch the the decay of light speed theory.
Edited by Flyer75, : comment on Taq's post.