HP Officejet prints in Vista -- but very slowly

[Guest]

I set up my HP Officejet 5510 using the "add printer" function, and
identified the 5500 series Officejet. I took the drivers supplied by Vista
(as HP's CD drivers won't load as the identify the operating system as
"wrong"). Everything appears fine on the "properties": The port is a
virtual USB port (USB001). The test page ("Windows Printer Test Page")
prints--but it takes over 5 minutes. It identifies the driver as
"unidrv.dll," and shows a number of HP-based "additional files" (mostly
..dll). In properties, it is set for "normal" printing at 600dpi (although
"fast normal" at 300dpi doesn't speed things up).
While everything appears normal, and the device manager reveals no problems,
everything prints extraordinarily slowly--five minutes or more for a page of
black text. Any ideas?

 

[Guest]

I have same problem. Looked up HP website and no new drivers available to
address problem.

 

[Guest]

I have same problem. HP website does not have any updates either on drivers
for Vista