CISCO VPN CLIENT RUNNING KERNEL 64 MODE (DOESN'T WORK!?)

Hi,
I switched my Mac to Kernel 64 and some days after, trying to run my Cisco VPN Client (vpnclient-darwin-4.9.01.0180-universal-k9), give me back the classic "*ERROR 51: Unable to communicate with the VPN subsystem*"
I'm not sure that the kernel 64 is the cause, but I believe it.
I've just tried the reinstall (also all fix and work around findable on the web and forums), but nothing to do.
The "+sudo SystemStarter restart CiscoVPN+" by terminal doesn't work, and it give back this message:
"+(kernel) Kext com.cisco.nke.ipsec not found for unload request.+
+Failed to unload com.cisco.nke.ipsec - (libkern/kext) not found.+
+Starting Cisco Systems VPN Driver+
+/System/Library/Extensions/CiscoVPN.kext failed to load - (libkern/kext) requested architecture/executable not found; check the system/kernel logs for errors or try kextutil(8).+"
Someone has the same problem?
(p.s.: sorry for my GOOD English...)

Do you really need to run a 64 bit kernel? One of the reasons Apple boots into a 32 bit kernel is because not all 3rd party drivers are 64 bit capable.
Unless you have a 64 bit only driver that you must run, or you have something like 32GB or more of RAM, the 32 bit Mac OS X kernel will work just as well as the 64 bit kernel. Both kernels will equally run 64 bit applications, so there is no downside to a 32 bit kernel for most users.
There are some other posts in this forum where someone ran Mac benchmarks with a 32 bit and 64 bit kernel, and the results were essentially identical. The best performance improvement came from having a 64 bit application, but having a 64 bit kernel didn't affect performance at all.
I too have to use the Cisco VPN Client, and as I do not see any advantage to running a 64 bit kernel, I will be happy running the 32 bit kernel starting Thursday, when my 27" iMac arrives

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