I had installed half a dozen of WUSB54G adapters, performance is ok while it's working, but it is just not stable enough especially some of the units are so close to the router that shouldn't have any problem.

I've set up a linksys network with a wrt54g router and initially two wusb54g clients. Transfer rates between the two clients hovered around 9-10Mbs. I took the two USB adapters back and traded them for the PCI adapters and that change alone boosted my transfer rate to around 30-35Mbs (still not the advertised rate... but hey, when do we ever get what was promised?) The USB adapters just don't seem to have the throughput.

This unit comes with very Buggy software. It doesn't work well with WinXP. It needs a version upgrade. It also could use a firmware upgrade. Neither existed at the time I purchased it. The range is also less than that of "B".I have gone back to a WUSB11 which works much better on my wife's XP machine along with a Wap54g with speed booster. Since that machine has a NIC anyway I may try a wireless G ethernet adapter instead and get better range.

I, like you, were reading reviews on this device and saw mixed responses. Purchased the product 2 days ago and here's what I found;
Device works great when you install the device and will continue to work correctly until you shut down your CPU or it goes to standby or sleep. After sleep mode or stand by, I had to manually assign the device an IP address then "ping" for test in the IPCONFIG. HASSLE and there's no way my wife could have figured this out. There is something not correct with the software for this device after you turn off your drivers.

Spent 45 minutes on the 24 hour support from Lynksys and they couldn't figure the problem either so they said I have a OS problem. Funny.

Today I purchased Motorola's version pn 512720-001-00 and have had no problems.

Final comments, if you are running Windows XP and never plan to shut down your CPU or turn onto standby, this is a great product. For the 98% of us that send our CPU's to sleep, proceed with caution!

I set up this wireless adapter to connect with my fiance's Microsoft 802.11g wireless router (about 6 feet away from my computer) and at first, it was a great connection, never had any problems. But lately, it drops the connection, 1-2x per day now even though my fiance's cable internet connection is fine, and I have a lot of trouble getting it to re-connect. My error message says it's connecting to the router but the router is not connecting to the Internet, which totally isn't true. We can't figure out what the problem is - perhaps compatibility issues between Linksys and Microsoft - but I know I have to reboot my computer several times and even re-enter the WEP key since for some reason, the Linksys software doesn't save it automatically. I can't figure out how the connection can drop so often when we're literally only about 5-6 feet from one another in the same room. Basically, I'm searching for another adapter at this point.