Security Group for sugarcrm6.1

[JAYA]

Hi,
I have Upgraded my sugarcrm 6.0.2 to sugarcrm 6.1 and i have Downloaded and installed security suite and was working fine but today it is starting creating problem.i have made four group,each group is having 4 user assigned.but security suite stop working. i have created a role in which i gave group right to all the users and assigned it to all the each group, means each group is having the same role,. But now only one person of the group is able to view the data who has created(assigned to) and other 3 person is not able to view the data. i have gone to admin and i assigned the data to the group also but still those 3 person is not able to view that data.Please anybody can provide me help.i am in great problem.
this is the screen-shots attached of my groups and role which i have made:


please anybody can give me some solution.