Windows 7 - Problem Event Name: AppHangXProcB1 Application Name: Explorer.E

When I create a new folder (or delete a folder, or rename a folder, the
system hangs with this message:
Problem Event Name:	AppHangB1
Application Name:	explorer.exe
Application Version:	6.0.6000.16386
Application Timestamp:	4549b091
Hang Signature:	fd87
Hang Type:	6144
OS Version:	6.0.6000.2.0.0.768.3

It also hangs when searching with this message:
Problem Event Name:	AppHangXProcB1
Application Name:	Explorer.EXE
Application Version:	6.0.6000.16386
Application Timestamp:	4549b091
ang Signature:	979b
Hang Type:	6208
Waiting on Application Name:	SearchIndexer.exe

I deleted Adobe Reader(did not help), and I have searched internet far and
wide, and I don't know what to do.  This has been going on for several weeks
now, and my computer is not really usable.

I jus bought a new HP computer with Vista, and it was doing the same thing,
so I returned it for then next step up, and now this one is doing the same
thing.  I'm pretty comuter savvy, but this one has me stumped.  I bought an
extended warranty with it, so I'll let the Fry's computer techs figure it
out.  I even did 3 recoveries, 1 with the recovery disc I made, and even that
didn't help.  I'll be shooting HP an email as well.