I installed Mandriva 2008.0 PowerPack x86_64 on my Dell Inspiron 1720 notebook.
I installed VMWare Workstation VMware-workstation-6.0.1-55017.x86_64.rpm.

I used a Windows Vista virtual machine that was created on Mandriva 2007.1 which worked very well: network access and sound both ok. Although sound only worked when no other program (like Amarok e.g.) was using /dev/dsp.

Now with 2008.0 I have no network access at all and no sound at all. I always get "Failed to open sound device /dev/dsp Device or resource busy" even when no other application is using /dev/dsp.

I have setup bridged network vmnet0 with my wireless eth1, but don't get network access in the Vista guest. I have no idea what is wrong here.
I removed vmware, installed it again, ran vmware-config.pl.
This time I choose for eth0 as bridged network (iso previously eth1, my WiFi)
Plugged in the network cable.
Started the Vista virtual machine and networking was fine.
So it seems a wireless network problem.
What could block the bridged networking via eth1?

When starting the guest Vista, I get the message "The host high-resolution timer device (/dev/rtc) cannot be set up to deliver interrupts (Invalid argument). Certain versions of the Linux kernel do not support this feature. Without the device, the guest operating system can fail to keep time correctly. To avoid this problem, see http://www.vmware.com/info?id=34."
Is this a result of the tickless kernel 2.6.22.9 ?
I tried the "nohz=off" kernel parameters, but VMWare Workstation is still complaining about a timer.

When I press the button "Open virtual machine", vmware closes completely and in the command window, I can read:
[bert@localhost ~]$ vmware
/usr/lib/vmware/bin/vmware: symbol lookup error: /usr/lib64/gtk-2.0/2.10.0/filesystems/libgnome-vfs.so: undefined symbol: g_get_user_special_dir
This was no problem in Mandriva 2007.1.
Workaround start vmware with virtual machine as argument.

There's your problem - workstation v6.0.1 does not support Mandriva 2008 as the host OS. See here for details:

http://www.vmware.com/support/ws6/doc/releasenotes_ws6.html

:-(

I run workstation 6.0.1 on my Dell Latitude D800 laptop with Mandriva 2007.0 as the host OS and it works like a dream with both XP Pro and Vista guest instances.

VMWare are normally fairly quick to roll in support for new distros, so I'm guessing that you will probably see Mandriva 2008 on the supported list when version 6.1 is released.

VMWare Workstation 6.0.1 does not support my Arch Linux x86 either, but it runs brilliantly. No needs for "any-any" patches over the stock 2.6.22-9 kernel (for 6.0.0 the latest any-any was mandatory).
My only issue was guest OS freezing, when the guest was Linux with SMP kernel and 2.6.22.X kernel running. However, the tip by adamw ( passing "nohz=off" to the kernel from the grub config ) is working flawlessly, up to now.
BUT, VMWare needs a LOT of fancy footwork to run properly on 64-bit hosts. I guess you already know that, and myself is avoiding using 64-bit Os in my hosts for many reasons... one of them being VMWare.

Mandrive 2008.0 x86_64 using kernel 2.6.22.9
VMware Workstation VMware-workstation-6.0.2-59824.x86_64.rpm

when bridged networking is configured with eth0 everything OK
when configured with eth1 WiFi then no networking in guest
find below how this is fixed

Patch for wireless networking to work
---------------------------------------------
raw patch:
http://www.linuxquestions.org/questions/li...21/#post2905568

refined patch:
http://communities.vmware.com/message/761031#761031

what I did:
find /usr/lib/vmware/modules/source/vmnet.tar
copy it to ~/tmp directory
tar -xf vmnet.tar
rm vmnet.tar
adapt ~/tmp/vmnet-only/bridge.c following vmware-wireless.patch shown below
tar -cf vmnet.tar vmnet-only/
replace /usr/lib/vmware/modules/source/vmnet.tar with the patched one (as root)
run vmware-config.pl (as root) to compile vmnet module again.

vmware-wireless.patch looks like
diff -Naur vmnet-only/bridge.c vmnet-only-new/bridge.c
--- vmnet-only/bridge.c 2007-08-22 03:14:05.000000000 +0200
+++ vmnet-only-new/bridge.c 2007-09-30 14:34:13.000000000 +0200
@@ -32,7 +32,7 @@
#include <linux/tcp.h>
#include <net/tcp.h>

-#ifdef CONFIG_NET_RADIO
+#if defined CONFIG_NET_RADIO || defined CONFIG_WLAN_80211
# include <linux/wireless.h>
#endif
#include "vmnetInt.h"
@@ -764,7 +764,7 @@
static Bool
VNetBridgeIsDeviceWireless(struct net_device *dev) //IN: sock
{
-#if !defined(CONFIG_NET_RADIO)
+#if !defined CONFIG_NET_RADIO && !defined CONFIG_WLAN_80211
return FALSE;
#elif WIRELESS_EXT > 19
return dev->wireless_handlers != NULL;

Have you upgraded to kernel 2.6.22.18 yet? How'd that affect Workstation?