A few days ago, I was installing SP2 for a Small SharePoint 2003 Server Farm.
I had read a few known issues from Bill's Blog like these:
And also from www.kbalerts.com:
But after applyed the SP, i run in some strange issue that was not in the previous articles I had read before...
This one was about Portal Search not working properly...was so strange...So, after trying a lot of things, like uninstalling the Frame Work 2.0 (that has some problems with SPS 2003), checking Server configuration....and so many things...but nothing, the search was still not working...
When we tryed to search some word as "sharepoint"....

We didn't have any results, and the same happend for the links at the left side of the Search Page (that links came from the Search WebPart) there wre not link at all...So, after some work with Microsoft guys, we look the Search.aspx page in its design mode, and we realized that the Search WebPart was gone!, so we import the Search WebPart again to the Search.aspx page, and finally the Search results were back!!, a simpe think like that cost us like a week to understand what the issue was, so I would like to share with you this, If you install Service Pack 2 for SharePoint Portal Server 2003 and suddenly your Search stops showing results, you should look at this first, and then try other things....