I have the exact same problem with my browser giving me this message after the latest update.
Now I can't browse the web on my "Internet" Tablet.

Great, now my "About Product" version says (null) but my command line says 23-14. The other night the "About Product said 30-2

Nokia-N800-23-14:~# free
total used free shared buffers
Mem: 126796 95580 31216 0 96
Swap: 130936 120 130816
Total: 257732 95700 162032
Nokia-N800-23-14:~#


Just to let everyone know, I'm just running a plain version of OS2008, no crazy stuff or customizations. I did the update about 2 days ago.