well you didn't read previous things posted by me but maybe i wasn't clear enough
so I'll try make clear:
i have a multiboot setup which contain: omap kernel, kp48, kp49, kernel-bfs, and an nitdroid entry. that's facts.
now I believe that during installation of kp49 files from kp48 weren't removed. but maybe I am wrong and that's just junk entry.
so I believe as i don't need kp48 anymore i may free some space on rootfs, as i have 17mb after all that optifing and cleaning (my apps are hungry, but well i may need some more byhand optifing as i tend to use extras-devel without much being aware that it may contain some thing wrong - I just have almost no fear of them)

of course I could do some things from app manager (either builtin or fapman) but those are instances of same package (with different version) and I believe i have leftovers.

well thankfully you are gentle, so not much stress on my side, and I'm commonly beeing taken as noob or troll perhaps because not precise conversation, even in my mother-tongue. Thank for helpfull attitude (some other people tends to don't want to know that something is different and tend to just throw junk answers as they think it obviously isn't and think I done some obvious thing wrong - eg. on anime forum i was asking for several episodes by names, and they say it's everywhere just search (by less gentle words), where episode numbers (the most common way to search) were returning corrupted answers as almost everywhere under that number were previous or next episode, perhaps because broken source, nad i haven't managed to find them - some people do tend troll about being a troll, because they think something obvious and don't check they not)

so thanks you were gentle, helpful and supporting, and for your warm welcome (I really appreciate it). and where I'm unclear (my fault of sharing information or questions) just ask and i would precise more.