If you've been eyeing the downloadable student edition upgrade of Windows 7 with that sweet, sweet $29 price, you might want to hold off. Microsoft has acknowledged that downloads from Digital River, the provider of student edition upgrades, are experiencing problems.

Apparently Microsoft decided to release the upgrade as an installer instead of an ISO file, and it's causing all kinds of headaches. Users are reporting that after the installer goes through the "Unloading the BOx" step, an error occurs and the installation fails.

There are workarounds available, like instructions to build your own ISO out of the installer, but it's probably best to wait a bit until this is all sorted out. [PC World]