Why do some programs disappear or lose bits?

  jack 20:05 04 Sep 08

In another post I was discussing difficulty in getting a microphone to work.
I discovered ultimately, the supplied software had disappeared and needed to be re installed, having done so- at next boot up it had gone again.

Strangely this being a boom mic on a USB headphone- The phones work fine all the time

Likewise my favourite image editor, Paint Shop Pro
will after a time lose some functionality, and I will have to set a repair mode or even as of just now a total reinstall the third time in as many weeks.

Why is this?

  Fruit Bat /\0/\ 20:29 04 Sep 08

Virus / malware or a dying HDD.

  jack 11:45 05 Sep 08

Thank you for the suggestions FB
No detected nasties at moment.
The HDD is New[ish] No criterion I know, but the events mentioned have been happening over time with the older hard drive too.
It has been a feature with Paint Shop over all the years I have been using it- after a while it will go Blah! and a reset is needed or Blah Blah! and a repair or even a reinstall.

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