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Hello, I have bought Powerman Optima 500 Plus UPS. While this product might be unknown outside Russia, it is shipped with megatec software and obviously works with megatec driver in NUT. besides the following problems (I think they are caused by one reason): 1) megatac driver is able to load and detect UPS only on second or third run. On the first run it typically fails. Later if daemon is being stoped and started again it's more likely to fail after restart too, but on the second restart it will mostly work ok. When it fails to start it outputs this to s...