Same here, mine pops up ALL the time. The phone could be by itself on a table or charging, and the search feature/keyboard pops up on its own. I even exchanged my phone for a brand new Acclaim from US Cellular, and the new phone does the same thing...I think it's even worse!
Now the search feature pops up immediately EVERY time I go to make a call (when the Dialing screen comes up), and sometimes on incoming calls. It's getting downright obnoxious.
We seriously need a firmware fix for this, it's not just my phone or my second brand new phone. This seems like a widespread issue with many Acclaim owners.