Monitor problems?

Afternoon folks. The last few images I have uploaded are no where near as punchy as the finished Photoshop image it derived from.

It has been so bad I have removed 2 as soon as they were uploaded.

Does anyone know what could be causing this loss of saturation, as I have not altered anything in my monitor or Photoshop settings?

The only change recently was I downloaded a trial version of Lightroom 4, but I did`nt change any settings that I was aware of.

I uploaded a Cargolux 747 today, and I have the original finished shot prior to upload if anyone wants a look.

Any help or assistance would be appreciated.

Aer you using different colour spaces, AdobeRGB and sRGB?

There was a thread about a different cause of this a while back ont he new forum.

I'll have a look at both Wallace. Thanks.

Thanks Brian. Every day is a school day. Got it sorted now. Thanks.