Issue with NIS 2013 Product Updates on 32-Bit Systems?

Is anyone aware of a possible issue with NIS 2013 not installing product updates correctly on 32-bit systems such as Vista or XP?

 

I eventually received the update for the Firefox 18-compatible Norton Toolbar on 09-Jan 2013 but it was installed silently after a re-boot (i.e., no notification that a product update had been delivered and no prompt to Reboot Now / Reboot Later or Apply Now / Apply Later - see my post here).

 

Now my LiveUpdate history is indicating that another product update was delivered on 14-Jan-2012.  I assume this was the NIS 2013 product update to v. 20.2.1.22, but again, no notification that a product update had been delivered.  That was two days and several re-boots ago and Support | About shows that I'm still at v. 20.2.0.19.

 

I'm worried that the Apply Updates Only on Reboot feature described here that Symantec has incorporated for 64-bit Win 7 and Win 8 users is somehow affecting the installation of product updates for NIS 2013 users with a 32-bit OS.

 

NIS 2013 Product Update 14 Jan 2013.jpg

 

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Windows Vista Home Premium 32-bit SP2 * NIS 2013 v. 20.2.0.19 * IE 9.0 * Firefox 18.0
HP Pavilion dv6835ca, Intel Core2Duo CPU T5550 @ 1.83 GHz, 3.0 GB RAM, NVIDIA GeForce 8400M GS