I recently installed pdaXqtrom onto an SD card on my C3100 (standard Sharp ROM) and it all works. Fine!
Then I decided to install something else (can't remember) which also required opie-sh. So I installed opie-sh. Then I decided that whatever it was I'd installed I didn't want to keep and so uninstalled it together with opie-sh.
A little while later I found that I couldn't start X or X applications via their icons. I eventually put 2 and 2 together and re-installed opie sh. Everything worked again.
So it appears that installing opie-sh replaced something similar installed by pdaXqtrom. I could leave things as they are but I'm afraid that sometime in the future, when I've forgotten about all this, I may decide that I don't want opie-sh and uninstall it again.
Can anyone tell me what in pdaXqtrom would have been overwritten, where it would have been installed and where I could find it again without going through the whole install again (One and a half to three hours worth).