After extending a windows Authenticaton site in sharepoint to use Forms Authentication a user compained
she couldn't export a list to spreadsheet and that the option under the actions menu was missing.
So i taught it has to do with the FBA setup after some reasearch.
I found this solution on MSDN Microsft good on you this time
So basically Form Authentication will reduce some functionality such as in document llibrary we wont see new document, edit in spread sheet,open with windows explorer etc.
For that i needed to enable the feature called Client Integration in Authentication Provider from the Sharepoint Central Admin.
After enabling that we got all menu items. 