After few weeks only of being rooted with a lot of memory, I was back to the memory problem.... Only 5MB....., even with link2SD, and even without installing any application
Market/Play, Maps, you tube on SD (special link2SD ext2 partition)
So there is a udge problem..., not related to application but to that phone.
With an helpfull friend we looks for a big file and here it is, we (he

) found it.... thanks to ConnectBot
/data/data/com.android.htcprofile/anr_history.txt
It's "some sort of debugger for HTC"
Mine, was close to 50MB......
So thanks to google [bug?] Data Partition slowly being eaten up! anr_history_txt
[bug?] Data Partition slowly being eaten up! anr_history_txt
I'm able to delete that !!!king file.
su
mount -o remount,rw -t yaffs2 /dev/block/mtdblock3 /system rm /data/data/com.android.htcprofile/anr_history.txt
mount -o remount,ro -t yaffs2 /dev/block/mtdblock3 /system
exit
exit