bad workflow design

Then you need to get more information!  Here's a list of links after my SharePoint Workflow for Developers webcast today.

SharePoint Workflow introduction

Create a workflow in SharePoint designer

SharePoint Workflows

Create a simple workflow

Differences Designer vs. VS

Example SPS workflow w/ screenshots

Custom Office SharePoint activities from CodePlex

Infopath with Workflow

InfoPath training on MSDN

Best practices for WF - Jon Flanders' Blog