I have Mathematica 9.0.1.0 and I've recently noticed that whenever I press the equals sign and type something like Sech[x]^2, I get the message:

I then tried other search queries, such as p^2, Hamiltonian, and 40 degrees 39'44''. I keep getting the same message, though. What's strange is that, regardless of the search query, Mathematica still correctly interprets the input. Does anyone know why this message appears? I only started seeing it a week or two ago.
Thanks.
Off[]to hide the message. – 1110101001 Jul 21 '14 at 17:51WolframAlpha["Sech[x]^2","MathematicaResult"]? I believe this is equivalent to using the equals sign at the beginning of an input cell. – bobthechemist Jul 21 '14 at 18:21