Why does compiling take so long

I like to work with IDE 1.05.
But to compile ( not upload) a simple code of few lines of 450 bytes takes more than 15 sec.

The IDE runs on Win7 with INTEL DUO P8600 2.4 GHz

Thanks in advance for your support
Student

The usual suspects on Windows are Antivirus scanners or banking related programs like RAPPORT.