I don't know if this is new, but in the web browser the keyboard does not stay open for some pages.
Select Home->Settings->Extras->Launch Browser
Go to
www.mobileread.mobi
Select Search (or login, etc.)
Tap on the Search text box
=>The keyboard does not appear automatically
Select menu icon->Keyboard
Tap on any letter
=>The keyboard closes
Open the Keyboard again and tap another letter, the keyboard closes again...
If I go to
www.google.com then tapping in the search box does bring up the keyboard automatically and it does stay open, so perhaps the browser isn't recognizing the type of text box on the MobileRead page.
I love the fact that the text on the page actually zooms correctly to make it readable. I wish, as I'll post in another thread, that you could tap to move forward ("down") instead of having to drag the page vertically. Its much more convenient just to tap, although keeping the ability to drag is necessary for wider pages.