In the pb622 one can put dictionaries either on
/mnt/ext1/system/dictionaries (the main internal storage)
/mnt/ext2/system/dictionaries (an optional sd micro, usefull to test them)
/mnt/secure/dictionaries (an internal storage area)
anywhere, provided that you made a symlink from one of the previous three locations above
In each location, even with symlinks, they works well
If put in mnt/secure/dictionaries you can manage their availaibility via the system settings (like those from ABBYY)
On my PB, mnt/secure/dictionaries is 625mb of which 314mb are available (after I put there 70mb of my dictionaries)
It doesn't seem quicker to have dictionaries there
The only cons I can think of is the wearing (in terms of reading cycles) of the internal memory
anyone has any other pros/cons
Paolo