Virtuemart crashes when I update / edit shopper data

[ziojigen]

Hallo, sorry for my poor english...
I have the problem above: virtuemart crashes when I update or edit shopper data.
My configuration is:
PHP: 5.2.17 (same result with 5.3.13 version)
MySQL: 5.1.61
Joomla: 2.5.6
Virtuemart: Virtuemart 2.0.8e
Joomla and third-party components/modules/plugins: nothing
testing browser: Internet Explorer, Firefox, Google Chrome with the same results

If I register an user with joomla registration form, all is ok.
BUT WHEN I modify my account (as registred user) with "maintain user accounts" function (ehm... this is the right function name? sorry) from frontend virtuemart or I modify the shipment information, and click "save", the browser open a page with a connection timed out error: why?

Can our help me? Thanks for any help you can give me

Roberto

[Milbo]

I am sorry, I have no clue

[ziojigen]

I am sorry, I have no clue

...
And a configuration that it works properly? Is a big problem for me...

[Milbo]

Do you use layout overrides?