1) Internal Flash is the writeable portion of the 128Mb,on the standard C760 the 128Mb is broken into 3 parts (roughly 8Mb, 52Mb, 68Mb) where the 52MB is the read-only root filesystem, the 68Mb is the writable Internal Flash (including parts of Qtopia not on read-only filesystem) and the 8Mb is kernel and flashing system stuff - I\'ve never been able to mount it to see for sure. The TEMP storage is the 1Mb RAM disk mounted on /dev/shm used as temp - it\'s using 1Mb of RAM only.
2) All packeages installed to the Internal Flash are installed to the writeable partition of the flash and will survive a hard reboot.
3) The RAM is used as per a laptop/desktop - no packages are installed here
As you are Cacko you may have reformated you read-only space and therefore have more room on the writeable (this will be shown in the sysinfo tab - it has total, used and free)
Stu