If not interference:
- Reset the iPod. Nothing will be lost
Reset iPod touch: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Reset networks settings: Settings>General>Reset>Reset Network Settings
You will have to rejoin all networks and repair the BT devices
- Reset all settings
Go to Settings > General > Reset and tap Reset All Settings.
All your preferences and settings are reset. Information (such as contacts and calendars) and media (such as songs and videos) aren’t affected.
- Restore from backup
- Restore to factory settings/new iPod.
I found your post because I recently experienced the same problem. I had been enjoying great freedom via bluetooth with my iPod 4G and ProHT headphones as well as a (very strong) Motorola HK202 headset. Working in the kitchen was not a problem UNTIL I started using the convention / microwave oven. I experienced the problem you related and it even continued for a very short while after I finished using and unplugged said oven.
I have tried two iPod 4G, two different ProHT headsets and the forementioned HK202 with all combinations and received the same results. I moved a PC with after-factory bluetooth into the affected area. The Broadband radio is quite robust but quality/fidelity suffered.
My conclusion is there are some pre-bluetooth era appliances that were generally RFI-approved, at one time -- or even spread-spectrum approved -- but now are wreaking havoc on your bluetooth communications in that area of operation. Do let's remember bluetooth's limitations; some applicaions are good, some are great and some suck.