If I have 5000$ in the bank, I certainly hope that my 'value' is at least 10000$, whatever than means,
Let me take a semi-serious stab at this for ya. If you have $5000 "in the bank" that means that you're getting a return of, at *most*, 3% per year. Someone who can do math might look at that and say "Hell, Paychex freakin common yields over 4%, I can do a lot better with that money than this fool" and offer to buy you out to get his hands on the caysh.
Ok, ok, I admit, it's not going to happen to you or me (and if someone did offer to buy me it probably wouldn't be Veronika Zemanova, it'd be Betty White's grandfather) but there are very, very large companies that are sitting on gobswallops of cash earning, essentially, zip. Some of them earn zip on all that cash while their core businesses print money. Apple and Microsoft come immediately to mind.
Whether that business is sitting on non-performing cash out of deep-seated paranoia and inferiority complexes (Jobs) or just out of gross stupidity and lack of business sense (Ballmer), sooner or later someone who can do math is going to run the numbers and want access to that dragon's hoard of money that's sitting around and, presto, a buyout offer will appear.
Novell is just the current one. Not the first. Not the last.