are you using the latest drivers off the logitech website?

The driver cd I have is version 9.5 and that is what is available on the Logitech website which is dated 14/12/2005.

Sigmatel Is Not Compattible with Logitech Webcams.

To solve the problem, try the following: 

1. Unplug camera from the USB port.
2. Restart the computer and allow startup items to load.
3. Click the start button and select “Run” and type the following text in the “Open” field and select “OK”

C:\Program Files\Common Files\Logitech

4. Locate and rename the “KAudP” folder to “KAudP.old”
5. Search for and rename “LVCKAP” to “LVCKAP.OLD”
6. Restart the computer and wait for all items to load
7. Once restarted, plug the camera into a USB port and test functionality

Somer

I just purchased a E510 (Dimension 5150) and a new Logitech QuickCam Pro 5000. Same lockup problems with Sigmatel audio, however, I also have Soundblaster Audigy installed. First the cam wouldn't work and system would crash. After disabling the mic in the EAX console, then reinstalling the cam software, everything worked with the cam, but no audio through the speakers. I have uninstalled the Audigy software and now the cam and audio both work along with the mic. But the Audigy software is what provides the 5.1 and 7.1 hi-def surround sound. I have searched all 3 forums at Dell, Creative Labs, and Logitech. Apparently almost EVERYONE with every type of Soundblaster product and all types of Logitech Cams are all having the same issue. Logitech and Creative Labs are both pointing fingers at each other as having a "driver compatibility issue" yet neither seems to have any plans to resolve the issue. Talking with Dell support didn't help either as their solution seems to ALWAYS boil down to "reinstall with your PC Restore CD's." On my system that is less than 2 weeks old? I think not. Someone should tell Dell to quit recommending these products or make some kind of notation to let owners know the product is not compatible with their current setup. My only option to CORRECTLY resolve this issue is to return my cam (a 15% restocking fee I'm sure) and buy another cam. NOW after I have addressed this issue with a Dell Tech Support rep, he suggests I order a Creative Labs Cam...go figure!

I hope someone can help as well.  We don't have a laptop.  But we do have a new XPS 400, with the MCE 2005.  NONE of the webcams we've bought have worked.  I've tried Logitech Fusion, Creative Labs Live Ultra and even the new Microsoft VX6000.  Been in contact with Dell.  No help there.  Logitech has given me many ideas, non of which worked, just kept getting the BSOD.  No BSOD with the others, just no recognition of the connection.  Keeps asking us to plug in our USB.  We did a complete PC restore.  Still no good.  Now our scanner isn't working on our Canon printer.  I'm thoroughly disgusted with this.  You would think someone would know what's going on and be able to fix this problem.  Brand new computer and you can't install webcams!  (The Creative Labs Live Ultra, worked perfectly on my son's old Compaq...go figure!)  This is our third Dell.  We've always been pleased, but not now!

These things are getting pretty frustrating. I purchased the 9400 Inspiron so I would have the best. I have had to spend the first 60 days trying to fix one problem that caused BSOD's and now this. For the money paid this is not good enough. It doesn't look good for dell to be my next machine.

I have viewed the logitech site and nothing, dell site, nothing and from previous experience dell tech support is starting to leave a little to be desired. When you have people coming here looking for answers it means we are not able to get them somewhere else.

I hope you are listening Dell.

I don't think this is Dell's problem, but I could be wrong. You'd think Logitech would work to resolve any hardware issues on a PC/laptop from the largest computer manufacturer in the world.

Dan.

Somer,
thanks for the step-by-step to fix the webcam-related crashing problem. Got a inspiron 6400 yesterday and tried to install the Logitech Quickcam connect. After pluggin it in, the system crashed immediatietly with the errors as others described them above.
Re-naming those files solved the prob!
Thanks

QTverse