By using the search facility at http://search.support.microsoft.com you can query the KB for new items entered in the past x days (where x is 7,14,30, or 90). KB articles tend to be released in groups. In perusing the KB database recently, I found 200 entries that were newly added in the past 14 days -- all dealing with post-SP1 issues. Below, I've listed some of the ones I found most interesting (most are driver or file system related).

I know that we've actually spent time here trying to debug a problem that we thought was in our code, only to discover later that the problem had already been documented as an NT problem in the KB. So, remember: Check the KB!

Interesting Post SP1 KB Articles (abbreviated titles):

Article ID #	Title of Article
Q237556:	How to Troubleshoot Win2K HAL Issues
Q254649:	Windows 2000 Memory Dump Options Overview
Q269013:	Non-Admin User Can't Access Removable Media after NTFS Format
Q260113:	"Internal Error - Disk Group Exists and Is Imported"
Q268094:	Win2K Can't Read CD-R Discs Created with DirectCD
Q268236:	Non-Administrator Can't Access to Removable Media
Q259283:	Using File Signature Verif Tool to Find 3rd party Drivers
Q262320:	Error Msg When You Open a File on NTFS Volume
Q268363:	Intel Physical Addressing Extensions (PAE) in Win2K
Q229716:	Description of the Windows 2000 Recovery Console
Q266420:	Win2K Service Pack 1 Fixes for Stress-Induced Issues
Q266403:	HOWTO: Enable and Use NDIS Verifier

Check 'em out! All interesting stuff.