Many resellers have been facing problems with new VPS account.
The problem is that they allocate less resources than required.
Here is the small list of required resources:
Disk space - 580 MB ( For Minimal VPS install) + additional as per your needs
Processes - 20 (For Minimal VPS install) + additional as per your needs
Memory - 64 MB ( or whatever suits your needs)
Please dont expect a VPS with these minimal resources enough to run a Web or MySQL Server. Though you should be able to run things like FTP or SMTP server.
Just curious, if 580mb is really the minimum required then why do you sell a plan that has a 500mb limit? It seems as if you are selling a product which really won’t work.