Power cycling it daily can help--some phones require this more than others, but it can have the effect of freeing up some RAM on the device.
Not too familiar with Android myself as I've never used it (I have used literally everything else)...but my guess would be something along the same lines as what iPhone 3G users are seeing with 4.0. As the software advances, the hardware gets left behind. This could be the case with your phone. (This is exactly the reason I haven't tried Android yet--too many phones too quickly, and too many os's too quickly--it needs to settle down a bit before I invest money in it).
Not too familiar with Android myself as I've never used it (I have used literally everything else)...but my guess would be something along the same lines as what iPhone 3G users are seeing with 4.0. As the software advances, the hardware gets left behind. This could be the case with your phone. (This is exactly the reason I haven't tried Android yet--too many phones too quickly, and too many os's too quickly--it needs to settle down a bit before I invest money in it).