The holiday season already saw two clothing chains — Deb Shops and Delia's Inc. — file for bankruptcy, with the latter retailer announcing plans to shut down entirely. Wet Seal Inc. and Body Central Corp., meanwhile, have warned investors that their ability to keep operating is uncertain as cash supplies dwindle. It's not just clothing merchants suffering either. RadioShack Corp., the almost-century-old electronics chain, has said its status as a going concern is in doubt.