Well it appears Linkedin for BlackBerry has been updated to a new version. According to the Linkedin blog they have made several upgrades that should fix some issues and improve performance. It is not available via BlackBerry app world yet but it is available via OTA and the link is provided below.
About update from Linkedin Group.
We’ve just released an update focused on performance, battery life and resolving several issues our users were seeing with downloading connections. We made a number of changes to how we handle merging your address book with the BlackBerry Contacts application and other changes that should significantly reduce the battery life issues some users have reported.
We’ve submitted it to App World but it will be a few days before it’s live as it works its way through the approval process. You can download it immediately using the BlackBerry browser on your BlackBerry: OTA link is HERE! http://m.linkedin.com/blackberry