I'd noticed this a while ago but hadn't bothered to prove it to myself, it's happened again today so I decided to check it out.
Basically when doing a search of my Yahoo mail account some messages don't come up even when the term is in that message. e.g. I searched today for 2652 as I was trying to find an order number for a nokia 2652 that I ordered. Loads of other messages came up that included 2652 but the one I was looking for wasn't there. So I looked manually and found the one I was after and sure enough it's there, with 2652 in the message same as the others, just it wouldn't come up in the search even though it's exactly the same message as the others although with a different reference number.
Anyone else having the same problem???