[TYPO3-english] upgrade to 4.2.3 problems?

[Henjo Hoeksma]

Hi list,

I upgraded a site to 4.2.3 and am left puzzled: I can fill in the title 
field of a page, but as soon as I press save it brings up a dialog box 
with the note my login has probably expired (which isn't the case). 
When I cancel everything saves, but the forms are empty...

In the pagebrowser everything is fine.

Using TV 1.3.7

Everyone else this issue?

I like puzzles ... but not all of them ;-)

Thanks in advance.

Henjo