You're off topic for this forum, which is dedicated to Windows Live OneCare. You may want to try the Microsoft Public newsgroups here: http://www.microsoft.com/communities/newsgroups/list/en-us/default.aspx or contact HP and/or Lexmark for help with the printer.
When a program crashes and the crash dump is submitted to Microsoft, that data is collected and analyzed along with millions of other reports. If the problem is due to a bug in Windows itself, an update will typically be released. You would not be notified directly of this, but in Vista's Problem Reports and Solutions, you can check for solutions and if one is available, it will be shown there.
-steve