The flash memory in the phone or the firmware imposed limitation on the flash memory seems to be too low for storing many photos for screen saver. In reality I was able to store about 6-7 pics only (each pic being 45-50kB) with the limitation of 320 kB imposed as of now. It would be greater if the newer firmware can support the USB flash drives as additional memory for storing screen saver images (with a menu option to choose the destination for storing the images). In this case the screen saver images will be downloaded from the FTP or HTTP server to flash drive without any size /count limitation and displayed as screen saver.