I want to have URLs of pictures in my gallery in any circumstances in definitive form "displayimage.php?pos=-10" (for example). I don't want to have them never in variable form like "displayimage.php?album=lastup&cat=0&pos=9" (because when somebody uses URL like this, the particular picture in it will be changed when I update my gallery. So, is there a way how to prevent this? Thanks for the answer!
Not in 1.4, no.
And in 1.5? :)
1.5 uses pid instead of pos which avoids this problem.
Cool. When can we expect 1.5? :)
There's no scheduled release date yet. Usually, the answer to questions like yours is "when it's ready". You're welcome to check out the subversion repository. Be advised though that dev versions that haven't been released yet go unsupported.