On face value, no. But what kind of beer, how long was it in primary, why did you move it to secondary, and is there a lot of headspace in the secondary?
I have a Kolsch that has been in the 5 gallon secondary for about 3 weeks now. I'm waiting for it to clear a little more before bottling. I think this weekend will be about 4 weeks. I've been told I could wait a couple months and not have to worry. True? From what I have found searching everywhere it is more than likely yeast and not proteins that are causing the haze.
3 weeks is good for me. I have a 4 week secondary right now. It depends on what additives you have and what you are going for. I had one in a secondary for 6 months (not on purpose, just lazy), and it turned out fine.