IFMember problem

Hello,

Could anybody give me any ideas why when I run IFMEMBER /LIST I get results
which are incorrect? When a user logs into a workstation, a script runs
which gives the user access to programs that they are given permission too in
Active Directory. This has been working great until recently when it has
given the user an icon for something that they are not added to in the
security group. IFMEMBER /LIST claims that they are but on double checking
the security group, although its present, there is actually no members added.

Can any please shed any light into this for me please?