Clipboard operations (copy/paste) often stop working on VMWare Workstation

I have a dual-screen set-up with a Windows host and a Linux virtual machine.

Windows Host: Windows 7 x64, VMware Workstation (8.0.5, most recent)
Linux VM: CentOS 6.4 x64 (most recent) + VMware Tools (most recent)

The shared clipboard feature is of great importance to me. I often copy commands from the Windows host into the Linux VM, but clipboard sharing often stops working.

A reboot of the guest does not solve the issue. A reboot of the Windows host machine does solve the issue, although it's only a temporary measure. The issue often comes back within 20-30 minutes after reboot.

I once spent a few hours rebooting, reinstalling VMtools, etc., while the fix was really suspending and restarting VMware itself.

I have the same issue but Host is Windows, guest is Windows. I force kill vmtools and rerun them and that has always made cut/paste continue to work.

taskkill /F /IM vmtoolsd.exe
"C:\Program Files\VMware\VMware Tools\vmtoolsd.exe" -n vmusr

Not sure what the command would be on centos to kill client tools.