I'm deeply sorry for missing information.

Joomla: 2.5.20
JoomSEF: 4.5.1
Virtuemart: 2.0.26d
PHP: 5.4

Hi,
I recently purchased Joomsef with Virtuemart extension. Thanks for that. I have multiple domains for each language (2 in total) and configured Joomsef to use different domains for each language. My initial experience is quite good. However, I have some problems need to be sorted out listed below:

1- I have a Virtuemart Category menu entry in my main menu. It doesn't function as it supposed to. Before installing Joomsef, I was getting a list of categories as expected but after installing Joomsef, it doesn't even point to the correct Joomla URL (index.php?option=com_virtuemart&view=category&virtuemart_category_id=0&categorylayout=categories) which I'm checking under 'Manage SEF URLs'. And the resulting page (index.php?option=com_virtuemart&categorylayout=categories&lang=en&view=category) is a random category which I'm guessing is the last browsed category for that language.
2- Is it also possible to make Menu Item Association work by linking to category view for switched language while browsing a product? That was how Joomla managed it.
3- SEF Url generated for Virtuemart products use the 'products' prefix like 'products/product_name' for English but for other languages it still uses the 'products' prefix like 'products/product_name_in_other_language'. I can correct and lock the Sef Url for categories but I can't do that for all the products (not practical). Is there a way to define what prefix to use for Virtuemart products in different languages? At least is it possible to use the corresponding Virtuemart category 'menu title' for that language?
4- Also the 'products' entry is missing in the 'breadcrumbs' for every product and category in every language.
5- The option 'use sitename in title' is not multi-domain friendly. Same sitename is used on every language regardless of the domain name. Is it possible to enter different sitenames for different domains (languages)?

Thanks...