timestamp bug 7.4beta3

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POSTGRESQL BUG REPORT TEMPLATE
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Your name : Nayib Kiuhan
Your email address : nayib(at)onlinetec(dot)net

System Configuration
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Architecture (example: Intel Pentium) : Sun Sparc IIIi

Operating System (example: Linux 2.0.26 ELF) : Solaris 9

PostgreSQL version (example: PostgreSQL-7.3): PostgreSQL-7.4beta3

Compiler used (example: gcc 2.95.2) : gcc 3.3

Please enter a FULL description of your problem:
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In versions before 7.4beta3 I use to have tables with
"date" timestamp DEFAULT 'now'
It use to works properly, placing the actual date at the moment a new record was inserted. Now it always have the same date which correspond to the date at creating the table.

Please describe a way to repeat the problem. Please try to provide a
concise reproducible example, if at all possible:
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