InMobi Interstitial Suspend?

Hi,

i implemented InMobi Interstitial… just to find out, that when it appears the

app suspends and than resume again!

Thats quiet a mess when u have a password security feature for the users.

Always when the app resumes it asks for the password.

So how should I know now if the app resumes just from a Ad or from a

previous user Suspend??

Is it really necessarly that InMobi Interstitials have to make the whole app suspend?

Thanks

Chris