There are a few signs Ive noticed in aviation, that indicate when the financial outlook for a company turns negative..
1. The guys in the know (ie... owners and management), start to bail out.
2. Pilots start having to supplement the short term cash requirements of the airline (ie... upfront training costs).
In the end run, the last thing you want to be when an airline goes under is an 'unsecured creditor'.
If there is anyone in the know at easyjet who can set me straight about the facts, then please do.