It is most certainly a problem on Alla's end, not the user's. Those who do not have problems could be either hitting the site on off hours or are simply very lucky in their network connection's physical address.
I have 2.5mbps broadband, a hell of a powerful computer that I defrag regularly, an obsessive need to constantly scour for spyware and malware, and a pretty deep understanding of Internet technologies (network and website admin). Alla's is simply overloaded. The servers are inadequate, and/or the SQL database was inefficiently built and has grown too large and complex. It is most likely a combination of both. Fixing either will require either a serious amount of time to restructure the database or some heavy spending to upgrade the actual servers. Neither are something Alla will want to do, unless they get a lot of feedback about how annoying things are.
Like any business, they aren't going to spend money or time unless they have to. This isn't bad or wrong, it's just simple good business acumen. Our responsibility as the consumer is to make sure they know how significantly this situation is affecting our decision to give them money. This will force Alla to make a decision to either lose premium subscriptions, or make the investment to improve the web site. I'm betting on the latter. The folks who run Alla haven't proven themselves stupid thus far, and I doubt they will sacrifice long term revenue to save money in the short term. The only question is when this upgrade will happen. I'm hoping it will be soon, but it's up to us all to 'encourage' them to take care of matters as quickly as possible.
It's frustrating and annoying, and I find myself using other, free info sites more and more. But Alla's is still the best clearinghouse of EQ data I've found. I can find all the info here in one place, whereas I may have to visit two or three other sites to find what I'm looking for as an alternative. So I hope they'll get this little issue fixed soon. :)