Seeing that hourglass a little too often? That new PC that's running slower than the old one it replaced might be weighed down with several applications destined to gather dust on the desktop. PCs are becoming increasingly cluttered with pre-installed software—in some cases the traditional trial offers for Internet service providers, but also newer applications like spyware-blocking tools which, somewhat ironically, inundate users with pop-up windows advertising their services. Complaints about the "crapware" are prominent in discussion forums and blogs related to PCs. A deal between Dell and…