I'm pretty sure Newegg is having server problems. I've noticed issues too. I wouldn't say it's unusable but it definitely doesn't come up every time for me.
Computer: Intel Core i5-750 2.66 GHz quad-core processor | Asus P7P55D-E motherboard | Crucial 4 GB DDR3-1333 RAM | nVidia GeForce 7800GTX | 2x WD Caviar Black WD1501FASS 1.5TB hard drives in RAID 1 | Antec Sonata III case with Antec EarthWatts 500-watt PSU | Dual Dell UltraSharp 2408WFP 24" widescreens | Windows 7 Ultimate 64-bit
Other: 2007 Subaru Legacy 2.5GT Spec.B 6MT | Samsung Galaxy Note II Smartphone | Mamiya M645 1000S medium-format SLR with 55mm f/2.8, 70mm f/2.8, 210mm f/4, teleconverter, 120 and 220 film backs | Olympus E-PL1 Micro-4/3s DSLR with 14-42mm and 40-150mm lenses