Improvements over system software version 1.0.03.11140: •Resolves an issue where using a very short page flick to turn a page may accidentally select words and start the dictionary lookup
Improvements provided by previous software versions and included in version 1.0.04.12210:
•Improves touch panel functionality
•Improves stability when searching the dictionary
•Improves Internet connectivity
•Improves Digital Rights Management (DRM) contents compatibility
•Resolves an issue where the Reader is unable to download some e-book files
I cannot say that I've seen any of those bugs, but then again I have a hacked Sony Reader. I've long since stopped using Sony's software. All my reading on the Sony has been in the Kindle app and CoolReader, and I haven't had any trouble.
But if you're not inclined to hack your Sony Reader Wifi, you'll probably want to install the update. A number of owners have already tried it, and they've been posting their impressions over at MobileRead. They had experienced some of the bugs before, and some have remarked that they've been fixed.
You can find the update on the Sony website.
Like the last one, it requires Windows.