My latest payouts are not showing on my Multibit wallet.

In Multibit wallet I can see last pending 0.00000001 transaction since morning, do not know who sent it to me as well, clearly not cleverming.

This transaction cannot be found as well:
http://blockexplorer.com/tx/339eb7f9321952b238427904891f6dfb47c8cadbe0b2404ad6bb8678918d23c6

Is this pending transaction stopping multibit to register my latest payouts from clever mining?
Is this some kind of DOS attack on my wallet?