SharePoint, .Net, SQL, MS BI, Collaboration and Gadgets

I am working on a SharePoint dashboard project recently. We have a lot of pie chart and graph integrated using Reporting Services Add-In web part. We have set Target Audience in each web part to offer multiple views to different users. It works fine in the past until this Monday. All the web part with target audience tie to AD group disappear. After spending half day on it, we found that the password for search service and content access crawler account expired. This effect the user profile and cause the target audience failed. Do check out these accounts if you have similar problem.