At least, it acts like i haven't installed them. Running PE, have enabled auto apps to SD so most download to the card & I install them from there. Since doing that, I'll often start Market to find it attempting to d/l those apps again, usually hung with the status bars at zero...? Admittedly a little fuzzy about where apps can actually run from- seems somecan they actually be installed on the SD card, others moved to system/bin.
Anybody got a link to some app knowledge? Tia-
-from my 1.2 GHz PEv3.5 Droid