yep, I did that.. I have the vmx flag in /proc/cpuinfo.
However, that flag is on whether or not the BIOS setting for Virtualization is enabled.
SOLVED! -- The Dell E6500 BIOS has three settings for Virtualization Support:
Virtualization -- Enable Intel Virtualization Technology -- on
VT for Direct I/O -- Enable VT for Direct I/O -- on
Trusted Execution -- "specifies whether a Measured Virtual Machine Monitor (MVMM) can utilize the additional hardware capabilities provided by Intel Trusted Execution Technology. The TPM, Virtualization Technology, and Virtualization Technology for Direct I/O must be enabled to use this feature" -- off
If I turn on the Trusted Execution flag, then I get the virtualbox warnings about only having a 32-bit architecture. With it off, things seem to work OK. This was unexpected behavior to me.... I have the TPM stuff turned off in the Security portion of the BIOS. I would have expected this to effectively be a don't care..... guess not. If I ever get around to messing with TPM, maybe I'll try it