Why my app disappear at reboot? When I reboot the phone, often, some of the apps a get generic icon and won't load anymore.

A reinstall solves the problem but I'd rather not have to do that.

Device is an Acer Liquid Metal with Froyo.
I finally found out why! :D

When the phone boots - at least if I use go launcher - if the sd card is not completely mounted apps "get lost".
I've completely solved the problem activating my phone card pin code.
I turn on the phone, wait on the pin code screen without entering it for a minute and then I enter the pin: everything is perfect.
I think the problem can be also solved killing and restarting the launcher but I didn't test.