Bug: symbol recreates itself suddenly

*To*: mathgroup at smc.vnet.net*Subject*: [mg86686] Bug: symbol recreates itself suddenly*From*: "Severin Posta" <severin at km1.fjfi.cvut.cz>*Date*: Tue, 18 Mar 2008 04:50:49 -0500 (EST)*Organization*: Czech Technical University

It seems to me that after Remove[symbol] some times the symbol is "recreated" without notice. Consider the following example. How to repeat: In[1]:= $Version Out[1]= "6.0 for Microsoft Windows (32-bit) (April 20, 2007)" In[2]:= Unprotect[E]; ClearAttributes[E, {Constant, Protected, ReadProtected}]; Remove[E]; In[4]:= ?E During evaluation of In[4]:= Information::notfound: Symbol E not \ found. >> In[5]:= Solve[E == 2] Out[5]= {{Global`E -> 2}} (* ?! *) In[6]:= ?E E is the exponential constant e (base of natural logarithms), with \ numerical value \[TildeEqual]2.71828. >> (* THIS IS NOT CORRECT ANSWER *) Severin Posta