TeaTimer alerts
The alerts are due to TeaTimer noticing a change to a registry key; either being added or deleted, or the value of the key being changed.
It takes being pretty savvy about what your computer is doing to use TeaTimer effectively I've found. I've learned a lot about different programs just answering the TeaTimer alerts.
Most of the time it's a rule of thumb to allow what's going on, unless you know you specifically want to block a certain registry change (for example if you are using a startup manager and a new program keeps trying to reinsert itself into the Windows Run registry keys before you have a chance to disable it). Otherwise, if you block things (especially during a program update or installation you could leave yourself in a "half-baked" state.