Thanks to everybody!. This is a really helpful forum :O)
Yes, my Dell has a 32bit P3 Coppermine and lacks SSE2, so I tried the jazzbiker suggestion and installed "Seamonkey non SSE2" and it works very well. The only limitation is the physical memory that the machine currently has (384Mb). I'm currently looking for a PC100 SODIMM of 256Mb to scale up that to 512Mb. Watcher tells me that using Seamonkey the system is taking 81% of the physical memory and 42% of the swap, so it becomes a little slow. Even Onshape (onlline CAD) is able to run on it (yes, too slow to be practical, but is running). To me is enough, I need a browser for occasional use. I write this on Seamonkey :O)
Thanks also to Juanito, I didn't know the application selection by tags, (now I know). I just installed epiphany, have to test it. I used it heavily in the past.
Again many thanks to everybody, it's a pleaseure to be here.
Jesito.