Email Archive Manager kicks me out of Admin

Help...I was attempting to do a final clean up of test info. on my site. Went to Email archive manager, and although I had no emails older than 1 month...I clicked Trim e-mail archive and was immediately kicked out of my admin back to the login screen.

Tried a couple times and it happens consistently. Is this because I do not have old emails or is there something else I should check?

:unsure:

Okay...now I individually deleted all my emails and tried it again
Trim email archive and then Delete emails...and it is no longer
kicking me out???

Wow, I was really worried, now I am baffled and yet relieved. :lookaroun

Has anyone ever heard of this before?? Is there anything to check into so this doesn't happen again?