There's a new firmware update for the K-r,
Download:
Latest K-r Firmware Update : Software Downloads | RICOH IMAGING Changes to V1.14 - Correspond to the AF assist light function by white LED light for auto flash unit [AF360FGZII] and [AF540FGZII].
- Optimized contrast AF when using HD PENTAX-DA Limited series lenses.
- Improved stability for general performance.
*If the collaboration model is updated with this software, original start-up screen is deleted and it is changed to standard start-up screen.
*Contents of [Version 1.13] and earlier version will be also updated.
I'm about to flash it, so i hope there will be some improvements :P at least for non-HD-Pentax-DA lens......