I tried testing my site several times and always got F on First Byte Time Result.
Here is the result: http://www.webpagetest.org/result/110721_MG_dec1cf070e0d096392dd62b445599239/
and http://www.webpagetest.org/result/110721_F2_5303f8bceabeab2964dd72171f9a6b0e/
How to fix that Error: Time Out?
Thanks