I came across with some problem occurs in a development environment based on front-end servers. When I tried to deploy one or more solutions to my SharePoint sites or only to one, by Visual Studio 2005 using VSeWSS or The GUI (Central Administration), I received an error message on "Status" criteria at "Solution Management" page. In this situation, one of the front-ends was down. Some investigation shows that you can’t deploy solutions when you have unavailable front-ends in the farm.
Additionally, solution deployment fails time after time, and timer job is created and not running. For solving this problem, you should warm up all the front-ends or to remove the unnecessary from server farm page. Be aware.