Little Installous problem

I was pretty happy to find out that I could explicitly put the .ipa file in the Installous directory, have it show up in the Download list on iPad. But yesterday I found out that the stuff I put in the folder thru iPhone Explorer didn't show up properly. I even thought the ipa I put in has problem. But it turns out that the Installous instance seems has some problem. I think it was partly because the instance of running in background mode for a while and that seemed caused some problem. The strange thing seemed to be that I couldn't get it out of the background running mode.

Eventually I got things all working when I removed the files form the Downloads folder, and found then the entries still show up on the iPad UI. I clicked "install", the app crashed, and kicked me out. The next time I got back into the app, things seem back to normal.

Seriously, I am feeling a bit reluctant to run Installous in background.