When I'm in the office, whether plugged in or using wireless, the network drops several times an hour. It also takes a while (1 minute or more) to re-identify the network (identifying the network when first connecting takes a while but I'm not aware of anyone that has the problem with the network dropping out).
Specs: "Intel(R) Centrino(R) Wireless-N 2230" and "Qualcomm Atheros AR8161 PCI-E Gigabit Ethernet Controller (NDIS 6.30)" network adapters.
I updated the wired network drivers to the latest before I realized that it was happening with wireless too...
The interesting thing is that the problem is specific to the office network and doesn't happen at home (wired or wireless).
Edit I've added some screenshots below
This is what my system tray looks like when a disconnect happens.
When I click on the network icon, I see that it is identifying the network and this lasts some time.
Then it goes back to being connected until the next time it disconnects.