How can I create correct breadcrumbs when using Views arguments?
Check out the Custom Breadcrumbs module which has support for Views. Here is a quote about it (from the module's project page):

Custom Breadcrumbs 1:
Allows administrators to set up parametrized breadcrumb trails for any node type. This allows CCK-style node types to have &quot;Home &gt; User Blog &gt; 2005 &gt; January&quot; style breadcrumbs on the node view page itself, synchronizing cleanly with custom views or pathauto aliases. Breadcrumb visibility can be customized via a php snippet.
Custom Breadcrumbs 2:
Many new features have been added including support for Views, Panels, Taxonomy vocabularies and terms, paths, and a simple API that allows contributed modules to enable custom breadcrumbs for module pages and theme templates. These are implemented using optional, independent submodules that depend on the main Custom Breadcrumbs module.
In addition to breadcrumb visibility, this version provides an option permitting PHP code snippets to be used in forming the breadcrumb titles and paths. Multiple languages are also supported.