So i've spent some more time testing this pictureflow issue.
I've been trying with r25649, testing using your procedure of deleting the database files and then rebuild the pictureflow cache, and i'm still having issues.
I do observe that in the pictureflow directory i have in a particular working situation 257 different .pfraw files (from 0.pfraw to 156.pfraw) in case of successful cache building, and in case of an unsuccessful build a value below 257, depending on the point where cache building locks up.
I also do observe that every now and then my Fuze V1 locks up while building the database! Rockbox just generates a couple of database_*.tcd files, but the higher numbers are missing.
I started wondering that it maybe is related to the fact i have a microSD card of 16G inserted in the microSD slot. But after testing 6 times with the microSD card removed, i had a lockup, three times ...
So i'm starting to think that pictureflow cache generation might not be the issue after all.
Maybe there is an issue in database building, or maybe in the timing for writing files to the storage devices ... ? I do remember such issues from about a year ago ... Or is the hardware starting to fail on me?
Anyhow, if some of you have an idea of what else i could try, let me know, i will test and get back the results to this forum.
So for the time being i'll step back to r25298 again.
Eagerly waiting for all your suggestions.
Thanks, and cheers guys, keep up the good work!