This is a known bug with the HTC Hero phone interface. Thus it affects the Droid Eris.
After a while, the name under some of the app icons will change by itself. The new name usually begins with "com."
I have a lot of apps on my Eris, and this has happened to a number of them.
More here:
http://forum.androidcentral.com/htc-hero/725-apps-changing-names-themselves.html
This appears to be an HTC bug, not related to Android.
Someone should put up a sticky message to keep a list of known bugs.
Start a new topic or ask questions in the open forum.
