how you fix this problem?

I didn't fix it. I can't use JoomSEF, it's not woking for me and I have no answer for my question here, so I don't know what to do :-(

pabam:
Could you contact me at Diese E-Mail-Adresse ist gegen Spambots geschützt! Du musst JavaScript aktivieren, damit Du sie sehen kannst. with the access to your website's admin area, so I can check the problem myself? Thank you.
P.S.: Podle odkazu, který jste zmínil, to vypadá, že jste Čech, klidně můžeme komunikovat v češtině.

gracefulonline:
Hello, go to JoomSEF -> Manage Extensions -> VirtueMart and on the Common tab disable the "Show Menu Title" option. Use the URLs manager to trash the VM's URLs and clear the JoomSEF cache, so the URLs can be recreated.

Best regards,
ARTIO Support Team

i need help too ...

categories show fine ... nice links www.martminga.lt/4life-transfer-faktoriai
but if i press next product in product detail page then links again is bad tike this www.martminga.lt/index.php?page=shop.pro...03&category_id=1

It may be possible that the specific link is not being parsed correctly.
In order for JoomSEF to be able to process a link, the link must be generated via a routing function in Joomla / VirtueMart. (JRoute::_ in Joomla or url in VirtueMart)

So, I would advice you to check in your VirtueMart theme that the link is parsed correctly.