Not in the last few months, but I'd say their after sales service is fairly poor.
I asked them about upgrading to the Japanese 1.40 Rom for an 860, as I was having SD card problems, and it sounded on Sharp's site as if this might help.
As far as I can figure out by myself, ShortPocket seem to make a couple of changes to the stock ROM to the address book (to sort properly?) and to the input methods. Maybe 10 files are involved.
I asked if they could either tell me what the changes were, so I could back-apply them myself, or if they were a "secret", then if they could supply an update on CD.
I thought this would be trivial, as they would be converting incoming 860s with the 1.40 ROM for new customers.
(1)
It took many months to get any reply, and then
(2)
they offered me what I wanted for £25 (My memory is a little hazy, but I think they offered me an update on CD).
That seemed pretty steep for some work they had already done, when all they had to do was post it out.