Login-module in shopping cart wont work

[lhlied]

Hi.

I've migrated a site from JML/VM 1.0.15 to  JML 2.5.6 and VM 2.0.10.

When I'm at the shopping-chart, if I try to login, the user gets logged in, but the form in the cart showing the login information still stays at beeing able to log in.

Any tips on how to fix this?