What is the fine-grained topic of the following text: Many reasons: producing good bug reports is hard work; bugs rarely show up alone, and if I start filing one, I'll forget details about the others; sometimes it's unclear whether something is or is not a bug until you've written it down and looked at it; Launchpad is slow while previewing a blog post on the local machine is fast. Only return the topic.
Difficulties and challenges of producing and filing bug reports