Had to hard reset hp41cx, similar experiences?

[twdeckard]

Had a peculiar, disappointing, experience and I am curious how often others have experienced it?

Faithful (stock) 'cx powered up in an expected state. GRAD mode, several flags set in the display, PROG mode active. Incorrect contents of program memory (although perhaps the program counter was indexed into ROM).

I had to back-arrow power up. I was rather disappointed as I had a large FOCAL program under development and had not updated my notes since making quite a bit of progress.

Its the first time this has happened, has anyone experienced similar? The unit suffers in my backpack and its quite possible it was subjected to a thousand monkey's pushing keys during the course of its rough ride. However, it felt like ESD or some other mystery.

Todd