WordPress 2.5 & ID Numbers
One of the flaws that I think exists in the newest version of WordPress is that the administration dashboard no longer includes references to ID numbers.
These ID numbers are useful for identifying which category, page, or post a particular entry is identified with. The WordPress in_category() function, and others, utilize this ID number as one of the parameters for the function.
I have written an article about this over at 1955 Design. Please check it out if you would like to discover a solution to this problem.

I’ve notice the same problem. What are the BENIFIT’S of the new version? I’ve yet to update my wordpress blog.
Thanks for stopping by James.
I think the biggest benefit to upgrading to the newest WordPress version is to take advantage of security features that are improved.
I have done quite a few upgrades to version 2.6.2 and have found that it has some nice enhancements, but the biggest benefit is a more secure site.