Ubuntu – Adobe Flash installation problem in Xubuntu 16.04.1 i386

11.2 is just the major version. The actual current version is 11.2.202.297 and that is a maintenance release for 11.2, released in July 2013, including the same fixes that the 11.8 major version received.

From Adobe:

Flash Player 11.2 is the last supported Flash Player version for Linux OS. Adobe will continue to provide security updates.

I'm not sure how long that will continue but they still maintain a 10.something extended support release, so we're hopefully good for a few years yet.

Ignore Mozilla Plugincheck. It doesn't know what it's talking about.

I don't think forcing an insecure version of Flash is really the answer you want. Firefox is disabling it for a very good reason: Your alarm might not go off at all if somebody hacks your computer through Flash and encrypts your documents for ransom.

Why not install Alarm Clock or use something like Evolution's calendar and alarm functions? Both will work without Flash. Both will work without an internet connection... And there must be at least a hundred more alternatives. Keeping time is a very old problem.

As a side-note, you might want to submit a bug report to onlineclock.net to suggest they stop requiring Flash. You can play Alarm noises and videos without it and it's very easy to have them fall-back to something if Flash isn't installed.