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One of the well known effects of the asymptotic freedom is splitting of theleading-$\log$ BFKL pomeron into a series of isolated poles in complex angularmomentum plane. Following our earlier works we explore the phenomenologicalconsequences of the emerging BFKL-Regge factorized expansion for the small-$x$charm ($F_2^c$) and beauty ($F_{2}^{b}$) structure functions of the proton. Aswe found earlier,the color dipole approach to the BFKL dynamics predictsuniquely decoupling of subleading hard BFKL exchanges from $F_2^c$ atmoderately large $Q^{2}$. We predicted precocious BFKL asymptotics of$F_2^c(x,Q^2)$ with intercept of the rightmost BFKL pole$\alpha_{\Pom}(0)-1=\Delta_{\Pom}\approx 0.4$. High-energy open beauty photo-and electro-production probes the vacuum exchange at much smaller distances anddetects significant corrections to the BFKL asymptotics coming from thesubleading vacuum poles. In view of the accumulation of the experimental dataon small-$x$ $F_{2}^{c}$ and $F_{2}^{b}$ we extended our early predictions tothe kinematical domain covered by new HERA measurements.Our structure functionsobtained in 1999 agree well with the determination of both $F_2^c$ and $F_2^b$by the H1 published in 2006 but contradict to very recent (2008, preliminary)H1 results on $F_2^b$. We present also comparison of our early predictions forthe longitudinal structure function $F_L$ with recent H1 data (2008) taken atvery low Bjorken $x$. We comment on the electromagnetic corrections to theOkun-Pomeranchuk theorem.

Beauty, charm and $F_L$ at HERA: new data vs. early predictions