Added the possibility of having multiple slideshow blocks. The code has changed a little bit so please, test it and report bugs if you find them.
Now, in the settings page you configure the number of blocks to display (currently a maximum of 5, but this can be changed quickly).
Once you have set up this number, go to the admin/build/blocks and configure the blocks you want. What you had before in the settings page, now it is in each block configuration page. The parameters are the same as before.