If you've got an iphone4 or an ipad, dont forget to link it to itunes to download the firmware updates from yesterday!
The iphone 4 one doesnt do much other than rearrange how it displays the signal bars but the ipad one lists a few more fixes
iOS 3.2.1 for the iPad, according to Apple, includes a number of fixes:
* Improved Wi-Fi connectivity
* Fixed an issue that could prevent copy and paste of single-page PDF attachments in Mail
* Addressed an issue that could cause video playback to freeze
* Improved reliability of video-out when using iPad Dock Connector to VGA Adapter
* Added Bing as an option for Safari's search field